*indx += strlen(child) + 1;
*indx += PL_strlen(child) + 1;
NS_IMETHODIMP nsPref::NextChild(const char *child_list, PRInt16 *indx, char **listchild){	char* temp = (char*)&child_list[*indx];	char* child = strtok(temp, ";");	if (child)	{		*indx += strlen(child) + 1;		*listchild = child;		return NS_OK;	}	else		return NS_ERROR_NULL_POINTER;}