function GetXmlHttpObject()
{
	var xmlHttp;
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			try
			{
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				alert("Your browser does not support AJAX. Please upgrade to a newer browser (IE6, IE7, Firefox or Safari), or contact technical support.");
				return false;
			}
		}
	}
	return xmlHttp;
}


//Modular, reusable function
function ajax_fill_content(serverpage, fillcontentid, displayloading)
{
	var xmlHttp = GetXmlHttpObject();
	xmlHttp.onreadystatechange=function()
	{
		if(xmlHttp.readyState==1 && displayloading==true)
		{
			document.getElementById(fillcontentid).innerHTML = "<div style='text-align: center; padding: 100px;'><img src='/images/ajax-loader.gif' alt='loading...' /></div>";
		}
		if(xmlHttp.readyState==4)
		{
			document.getElementById(fillcontentid).innerHTML = xmlHttp.responseText;
		}
	}

	xmlHttp.open("GET",serverpage,true);
	xmlHttp.send(null);
}

function load_products(sortby)
{
	if (sortby==undefined)
	{
		sortby = document.getElementById("sortby").value;
	}
	
	var page = "/display-products.php?";
	page += "cat_name="+document.getElementById("cat_name").value;
	if (document.getElementById("sub_name")) page += "&sub_name="+document.getElementById("sub_name").value;
	page += "&sortby="+sortby;
	page += "&page="+document.getElementById("page").value;

	document.getElementById("sortby").value=sortby;
	document.getElementById("sortby2").value=sortby;
	
	//Make last page number no longer bold
	var alinks = document.getElementsByTagName("a");
	for (var i=0; i<alinks.length; i++)
	{
		if (alinks[i].className=="selectedpage") {
			alinks[i].className="unselectedpage";
			//console.log("Swapped! ",alinks[i]);
		}
		//else console.log("No Luck. ",alinks[i]);
	}
	//Make current page number bold
	document.getElementById("pagelink"+document.getElementById("page").value).className="selectedpage";
	document.getElementById("secondpagelink"+document.getElementById("page").value).className="selectedpage";


	ajax_fill_content(page, "products", true)
}