fig1 and the following discussion are intended to provide a brief , general description of a suitable computing environment in which the present invention may be implemented . although not required , the invention will be described in the general context of computer - executable instructions , such as program modules , being executed by a computer such as a personal computer , laptop computer , notebook computer , tablet computer , personal digital assistant ( pda ) and the like . generally , program modules include routines , programs , characters , components , and data structures that perform particular tasks or implement particular abstract data types . as those skilled in the art will appreciate , the invention may be practiced with other computer system configurations , including hand - held devices , multiprocessor systems , microprocessor - based or programmable consumer electronics , network personal computers ( pc ), minicomputers , mainframe computers , and the like . the invention may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network . in a distributed computing environment , program modules may be located in both local and remote memory storage devices . the main components of the system 10 are illustrated in fig1 in accordance with an embodiment of the invention . the system generally comprises : an integrated development environment ( ide ) 12 that runs on a computer terminal 14 that is used by a developer 16 ; a configuration file 26 that is generated by the ide as a result of interactions with the user ; and a runtime engine 48 that is loaded into a web browser that displays the integrated portal . the computer terminal 14 or workstation may comprise inter alia a memory 2 , processor 4 , and interface 6 for interfacing with a network such as the internet or intranet 18 . an input device 7 and display 8 is provided for a user to interface with the user workstation for inputting and displaying data . the ide provides a visual environment for the developer 16 to define the layout of the integrated portal , specify the constituent portlet applications , specify user interface ( ui ) changes in any of the portlets , and define interoperation actions among the portlets . the specifications made by the user are converted by the ide into a configuration file 26 and sent to a remote location specified by the user . this location 24 is within a web server 20 that is reachable via a communications network from the ide &# 39 ; s host machine 14 . the web server 20 - 20 n may comprise a memory 72 , processor 74 , and an interface 76 inter alia . it will be appreciated that file location 24 may be selected and stored on the server 20 having any number of configurations , for example a single server or multiple servers . the location 24 shown in dashed box may be accessible and centralized to manage on the server 20 n without requiring additional hardware or software to store the configurations . alternatively the file 26 is stored on the ide &# 39 ; s host machine 14 and is later transferred to a web server by any other means . any user 32 who intends to interact with the resulting integrated portal (“ integrated portal ”), loads the configuration file into a web browser 40 by targeting it to the url of the configuration file location 24 . the web page or web application 22 on the web server 20 is accessible via the network 18 by the runtime engine 48 of the user &# 39 ; s web browser 40 . it will be appreciated that the user 32 may access the system 10 via a computer terminal workstation 30 , the same or similar to computer terminal workstation 14 of the developer 16 . of course , it will be appreciated that the developer 16 may perform the same or all of the functions as described of the user 32 on a single workstation such as workstation 14 and / or workstation 30 . when loaded into the browser 40 , the file spawns an instance of a runtime engine 48 . further , this runtime reads the remainder of the configuration data and begins to assemble the integrated portal . the runtime engine identifies the component portlets and their url addresses and directs the browser to load these pages 22 . the configuration data 26 could specify one or more desktop applications 44 to be part of the integrated portal . a desktop application could be based purely on microsoft &# 39 ; s win32 technology or other technologies such as citrix ica 52 or java abstract windowing toolkit ( awt ), java swing 154 or the like . if the configuration data 26 specifies a desktop application 44 to be part of the integrated portal , the runtime engine 48 will communicate with a desktop agent component 42 on the user &# 39 ; s computer . the desktop agent will launch the appropriate desktop application 44 on the user &# 39 ; s computer and establish an internal conduit to relay commands from the runtime engine 48 to the desktop application 44 . the desktop agent can connect and communicate with multiple desktop applications concurrently . if the configuration data 26 specifies a desktop application 154 that is based on java user interface technologies such as java abstract windowing toolkit ( awt ) or swing , the desktop agent will launch a modified version the appropriate application on the user &# 39 ; s computer . the modification comprises of adding the java awt / swing adapter 152 into the startup sequence of the application &# 39 ; s 154 java virtual machine ( jvm ). the java awt / swing adapter listens to commands from the desktop agent and relays commands to the target java application 154 . if the configuration data 26 specifies a desktop application 52 that is based on a third - party remote desktop technology such as citrix , the runtime engine 48 will communicate a special message to the desktop agent component 42 on the user &# 39 ; s computer . the desktop agent will launch the desktop application 52 on the user &# 39 ; s computer . it will then determine the location of the remote machine 64 , and the user desktop 66 on the machine , where the actual application 62 is executing and communicate with that machine &# 39 ; s desktop agent 60 in order to establish an internal conduit to relay commands into the application 62 . the effect of performing actions on the application 62 can be visibly seen on the application 52 through third party technologies such as citrix ica ( independent computing architecture ) in greater detail and with reference to fig2 , 3 a - f and 4 a - c , the runtime engine 48 comprises of a kernel 100 and several component modules 102 , 104 , 106 , 108 , 110 , 112 , 114 , 116 , 118 , 120 , 122 . together , these component modules are loaded into a browser 40 . currently available internet browser software contains an execution engine 130 , which generally include a module to process asynchronous http requests , called xmlhttprequest module 132 ; and a module to process the html document , called dom api module 134 . the desktop agent 42 may comprise several component modules such as administration service 142 , application launcher 144 and request broker 146 to access and call win32 api layer 150 . the java awt / swing adapter 152 is a special module that is launched along with any java application 154 that is integrated by an embodiment of the invention . with reference to the runtime sequence process 200 shown in fig3 a in accordance with an embodiment of the invention , when loaded 202 into the browser the kernel calls 204 the config manager 112 to load 206 the portal configuration 400 , as shown in fig4 a . the config manager relays 206 this instruction to the net 118 module . the net module loads 208 the specified urls via xmlhttp component 132 of the browser . the config manager 112 stores 210 the information obtained into the registry component 102 . based on the portal configuration retrieved , the kernel 100 instructs 212 the config manager 112 to load 214 the layout configuration 450 , as shown in fig4 b . the config manager calls 214 the net module to load 216 the content of the configuration from the network , and write to registry 218 . the kernel 100 then instructs 220 the layout manager 110 to make the layout of the page as specified in the configuration data . the layout manager obtains the configuration information from the registry component . the layout manager then makes multiple calls 222 , 224 to the browser &# 39 ; s dom api 134 in order to construct 226 a page that conforms to the specified layout . each portlet resides in a separate html iframe in the main page . with reference to the runtime sequence process 230 shown in fig3 b in accordance with an embodiment of the invention , the kernel calls the page fetch 116 module to load 232 the specified portlet pages into their respective iframe . the page fetch module makes multiple calls 234 , 236 to the dom api component in order to load 238 the pages . with reference to the runtime sequence process 240 shown in fig3 c in accordance with an embodiment of the invention , if the portal configuration specifies any desktop applications to be part of the portal , the kernel 100 instructs 242 the communication module 122 to initiate the launch of the desktop application . the communication module sends 244 a launch request to the desktop agent 46 . the desktop agent uses the standard microsoft windows api 132 to launch 246 the desktop application . the win32api 132 returns 248 a response to the desktop agent which is relayed back to the communication module indicating successful launch 250 of the desktop application . the communication module responds 252 back to the kernel with an indication of successful launch of the desktop application . this process is repeated for all the desktop applications that are specified in the portal configuration . with reference to the runtime sequence process 260 shown in fig3 d in accordance with an embodiment of the invention , as web pages are loaded , the web browser engine 130 generates “ onload ” events , which are handled by the page preprocessor 114 component . the page preprocessor performs a setup 262 of the portlets and identifies 264 the page that has been loaded . the identification of pages is performed by matching unique strings of text on the page . these identification strings are provided in the portal configuration that has been loaded previously . the page preprocessor 114 then instructs the config manager to load 266 specific configuration for the page , as shown in fig4 c that has been currently loaded . fig4 c shows the file format 460 of configuration that may be applied on portlets . the config manager 112 uses the net module 118 to relay 268 the command to the xmlhttp module 132 to obtain 270 the page configurations . the page configurations are loaded and sent 272 to page preprocessor . the page preprocessor 114 then forwards 274 this configuration to the weaver 106 component . the weaver reads the configuration information and parses the current page and calls 276 the action library 120 component with the reference of the specific html tag element where the behaviour modification is to be made . the action library receives this information and sets up the appropriate event handling mechanisms 278 , 280 with the help of the event manager 108 to subscribe to events and publish events . events , in the context of this document , are actions that are either initiated by the user , such as mouse click , typing on the keyboard , mouse movement , drag - and - drop etc ; or initiated by the application , such as loading of pages , screens , and appearance of visual components in the user interface of the applications . in the context of this document , configuration of events is the association of specific events with specific event handling routines . with reference to the runtime sequence process 290 shown in fig3 e in accordance with an embodiment of the invention , when a web application related event that has been previously configured occurs , the event manager 108 publishes 292 the event to the action library 120 . the action library receives the event notification and in response to event 294 looks up the specified configuration data , as shown in fig4 c to obtain the sequence of actions that is to be performed in response to the event . fig4 c shows the file format 460 of configurations that may be applied on portlets . the action library executes these actions by making multiple calls 296 , 298 to the dom api module . with reference to the runtime sequence process 300 shown in fig3 f in accordance with an embodiment of the invention , when a desktop application related event that has been previously configured occurs , the event manager publishes 302 the event to the action library 120 . the action library receives the event notification in response to event 304 and looks up the specified configuration data , as shown in fig4 c to obtain the sequence of actions that is to be performed in response to the event . fig4 c shows the file format 460 of configurations that may be applied on portlets . the action library sends 306 , 308 messages to the desktop agent 42 via the communication module 122 . the desktop agent performs 310 , 312 the required action on the targeted desktop application by using the win32 api layer . the desktop agent relays 314 the successful completion of the actions to the communication module , which relays 316 this to the action library . with reference to the runtime sequence process 320 shown in fig3 g in accordance with an embodiment of the invention , when a java - based desktop application related event that has been previously configured occurs , the event manager publishes 322 the event to the action library 120 . the action library receives the event notification in response to event 324 and looks up the specified configuration data , as shown in fig4 c to obtain the sequence of actions that is to be performed in response to the event . fig4 c shows the file format 460 of configurations that may be applied on portlets . the action library sends 326 , 328 messages to the desktop agent 42 via the communication module 122 . the desktop agent performs 330 , 332 the required action on the targeted desktop application by using the java awt / swing adapter module . the desktop agent relays 334 the successful completion of the actions to the communication module , which relays 336 this to the action library . at any point during the handling of events , if error conditions are reported to the action library , appropriate configurations can be set to instruct the handler to retry the processing . this mechanism adds a reasonable level of robustness and tolerance to this invention . the devices and subsystems of the exemplary methods and systems described with respect to the figures may communicate , for example , over a communication network , and may include any suitable servers , workstations , pcs , laptop computers , handheld devices , with visual displays and / or monitors , telephones , cellular telephones , wireless devices , pdas , internet appliances , set top boxes , modems , other devices , and the like , capable of performing the processes of the disclosed exemplary embodiments . the devices and subsystems , for example , may communicate with each other using any suitable protocol and may be implemented using a general - purpose computer system and the like . one or more interface mechanisms may be employed , for example , including internet access , telecommunications in any suitable form , such as voice , modem , and the like , wireless communications media , and the like . accordingly , network 18 may include , for example , wireless communications networks , cellular communications network , public switched telephone networks ( pstns ), packet data networks ( pdns ), the internet , intranets , hybrid communications networks , combinations thereof , and the like . it is to be understood that the embodiments , as described with respect to the figures , are for exemplary purposes , as many variations of the specific hardware used to implement the disclosed exemplary embodiments are possible . for example , the functionality of the devices and the subsystems of the embodiments may be implemented via one or more programmed computer system or devices . to implement such variations as well as other variations , a single computer system may be programmed to perform the functions of one or more of the devices and subsystems of the exemplary systems . on the other hand , two or more programmed computer systems or devices may be substituted for any one of the devices and subsystems of the exemplary systems . accordingly , principles and advantages of distributed processing , such as redundancy , replication , and the like , also may be implemented , as desired , for example , to increase robustness and performance of the exemplary systems described with respect to the figures . the exemplary systems described with respect to the figures may be used to store information relating to various processes described herein . this information may be stored in one or more memories , such as hard disk , optical disk , magneto - optical disk , ram , and the like , of the devices and sub - systems of the embodiments . one or more databases of the devices and subsystems may store the information used to implement the exemplary embodiments . the databases may be organized using data structures , such as records , tables , arrays , fields , graphs , trees , lists , and the like , included in one or more memories , such as the memories listed above . all or a portion of the exemplary systems described with respect to figures may be conveniently implemented using one or more general - purpose computer systems , microprocessors , digital signal processors , micro - controllers , and the like , programmed according to the teachings of the disclosed exemplary embodiments . appropriate software may be readily prepared by programmers of ordinary skill based on the teachings of the disclosed exemplary embodiments . in addition , the exemplary systems may be implemented by the preparation of application - specific integrated circuits or by interconnecting an appropriate network of component circuits . it will be appreciated by persons skilled in the art that numerous variations and / or modifications may be made to the invention as shown in the specific embodiments without departing from the scope or spirit of the invention as broadly described . the present embodiments are , therefore , to be considered in all respects illustrative and not restrictive .