serverGateway('updateRecentlyViewedMedia');
	
	function serverGateway(strGatewayMethod)
	{
		switch(strGatewayMethod)
		{
			case "updateRecentlyViewedMedia"
				updateRecentlyViewedMedia_sender = new LoadVars();
				
				//vars
				updateRecentlyViewedMedia_sender.gatewayMethod = gatewayMethod;//used to tell flash_gateway.php 
				updateRecentlyViewedMedia_sender.sendAndLoad(_root.domainPrefix + "flash_gateway.php", updateRecentlyViewedMedia_loader, "POST");
			break;
		}
	}
	
	var updateRecentlyViewedMedia_loader = new LoadVars();//method for retrieving vars from server file
	updateRecentlyViewedMedia_loader.onLoad = function(success)
	{	
	  if(success) 
	  {
		_root.videoDomain = this.videoDomain;
	  }
	  else
	  {
		trace("did not load");  
	  }
	}

Used to make server-side communication easier

loadvars sendAndLoad custom use

ActionScript