var siteCache = new Array();
function showPortfolio(catID,navCurr) {	
	if(catID) {
		$("#xp-portfolio").slideUp();
		if(siteCache[catID]) {
			document.getElementById("xp-portfolio").innerHTML = siteCache[catID];
			tb_init('a.thickbox, area.thickbox, input.thickbox');//pass where to apply thickbox
			$("#xp-portfolio").slideDown();
		} else {
			var loader = document.getElementById("ajax-loading");	
			var ajax = new sack();
			ajax.setVar("catID", catID);			
			ajax.setVar("xAction", "showPortfolio");
			ajax.element = "xp-portfolio";
			ajax.requestFile = SITEURL+"/includes/common.site.inc.php";
			ajax.method = "GET";
			ajax.onLoading = function() { showLoader(loader); }	
			ajax.onInteractive = function() { showLoader(loader); }				
			ajax.onCompletion = function() {
				tb_init('a.thickbox, area.thickbox, input.thickbox');//pass where to apply thickbox
				siteCache[catID] = ajax.response;
				hideLoader(loader);
				$("#xp-portfolio").slideDown();
			}
			ajax.runAJAX();
		}
	}
	if(navCurr) {
		var nav = document.getElementById("main-nav");
		var tab = nav.getElementsByTagName("A");
		if(tab) {
			var active = "active";
			for(i=0;i<tab.length;i++){								
				if((i+1)==navCurr)
					tab[i].className = "active";
				else
					tab[i].className = "";	
			}
		}
	}
}