function addToCartAJAX(dataSource, data, callback)
{
	var XMLObj = false;
	if(window.XMLHttpRequest) {
		XMLObj = new XMLHttpRequest();
	} else if(window.ActiveXObject) {
		XMLObj = new ActiveXObject("Microsoft.XMLHTTP"); 
	}

	if(XMLObj) {
		XMLObj.open("POST",dataSource);
		XMLObj.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
		//XMLObj.open("GET",dataSource);
	
		XMLObj.onreadystatechange = function() {
			if(XMLObj.readyState == 4 && XMLObj.status == 200) {
				callback(XMLObj.responseText);
				delete XMLObj;
				XMLObj = null;
			}
		}
		XMLObj.send(data);
		//XMLObj.send(null);
	}						
}

function addToCart() {
	var args = addToCart.arguments;
	var numArgs = args.length;
	var inv = args[0];
	var qty = document.getElementById(args[1]).value;
	addToCartAJAX('/main/drumFestAdd.cfm','i='+inv+'&q='+qty,updateButton);
//	document.getElementById('tag_'+inv).style.display = '';
}

function updateButton() {
	alert(updateButton.arguments[0]);
}