Doble request de información con Ajax + PHP

[kapitol]

Código:

var siteTitle = "Mi sitio Web XXXXXXX";
var $j = jQuery.noConflict();
var tabSpeed = 500;
var slideShowSpeed = 1000;
var slideShowTimeout = 10000;
var slideTransitionEffect = "easeInOutBack";
var transitionTime = 1200; // page changing speed
var loading = false;

var homePageSlideImageWidth = 640;

$j(document).ready(function () { 
	function loadContent(menu_item) {
		showLoader();
		var urlToLoad = menu_item;
		var tuputamadreya = window.location.href;
		var i = tuputamadreya.split("id="); 
		$j.ajax({
			type: "GET",
			url: urlToLoad,
			data: "ajax=true&id="+i[1],

			success: function(msg) {
				$j(".container100x100").append(msg);
				loading = false;
				open_section();
				hideLoader();
			}
		});
	}
	function open_section() {
		$j(".size100x100:first").animate({left: "-100%"}, {queue:false, duration:transitionTime, easing:"easeInOutBack"} );
		$j(".size100x100:last").animate({left: "-50%"}, {queue:false, duration:transitionTime, easing:"easeInOutBack", "complete" : function() {removeContainer()} } );
		//
		themeBehaviours();
	}
	function removeContainer() {
		var containerToDelete = $j(".size100x100:first");
		var containerToPosition = $j(".size100x100:last");
		$j(containerToDelete).remove();
		$j(containerToPosition).css({"left":0});
	}
	function showLoader() {
		$j(".ajax_loader").remove();
		$j("body").append('<div class="ajax_loader">Cargando ...</div>');
		$j(".ajax_loader").fadeOut(0).fadeIn("slow");
	}
	function hideLoader() {
		$j(".ajax_loader").fadeOut("slow", function() { $j(this).remove(); });
	}
	
	//easeInOutExpo, easeInOutElastic
	function themeBehaviours() {
		linksBehaviour();
		inputsBehaviour();
		slideshowBehaviour();
		tabsBehaviour();
		thumbnailBehaviour();
		portfolioBehaviour();
		themeCommonBehaviour();
		accordionBehaviour();
	}
	
	function linksBehaviour () {
		$j("#header a, .ajax_link").click(function () { 
			if ($j(this).hasClass("current-item") == false && loading == false) {
				loading = true;
				//$j(".current-item").removeClass("current-item");
				//$j(this).addClass("current-item");
				//loadContent($j(this).attr("href"));
				SWFAddress.setValue($j(this).attr("href"));
			}
			return false;
		});
	}
	
	function handleChange(event) {
		if (event.path != "/" && event.path != "respond") {
			$j(".small_slideshow, .tabs").each(function(){
				$j(this).cycle('stop');				
			});
			//
			var path = event.path;
			if (path.substr(path.length - 1) != '/') {
				path += '/';
			}
			var pathToLoad = event.path.substr(1);
			SWFAddress.setTitle(siteTitle + pathToLoad);
			$j(".current-item").removeClass("current-item");
			$j("#header a").each(function(){
				if ($j(this).attr("href") == pathToLoad) {
					$j(this).addClass("current-item");
				}
			});
			loadContent(pathToLoad);
		}
	}
	SWFAddress.addEventListener(SWFAddressEvent.CHANGE, handleChange);
});