function g(id) {
return document.getElementById(id);
}

function swap(img) {
g('productDetailThumb').innerHTML = '<img class="frame" src="http://www.yumdrop.com/i/360x540/'+img+'"/>';
}
function bgpost(uri,params) {
var xmlHttpReq = false;
var self = this;

	if (window.XMLHttpRequest) {
	self.xmlHttpReq = new XMLHttpRequest();
	}
			
	else if (window.ActiveXObject) {
	self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
	}
	
self.xmlHttpReq.open('POST', uri, false);
self.xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
self.xmlHttpReq.send(params);
return self.xmlHttpReq.responseText;
}

function inArray(arr,val){
for(var i=0;i<arr.length;i++) if(arr[i]==val) return true;
return false;
} 

function checksize(col) {

	if (col != '') {
	/* g('size').disabled = false; */
	var oos = g('oos').value;
	oos = oos.split(',');

	var siz = g('size');
	var len = siz.options.length;

	var optcheck;
	var text;

		for (i=1; i<=len; i++) {
		var optcheck = col+'|'+g('size').options[i].value;

		text = g('size').options[i].text.split(' - ');
			
			if (inArray(oos,optcheck)) {
			text = text[0]+' - Out of Stock';
			g('size').options[i].text = text;
			}
			else {
			text = text[0];
			g('size').options[i].text = text;
			}
			
		}
	}
	else {
	/* g('size').disabled = true; */
	}
}

function update_shipping() {
var method = g('ship_method').value;
var total = bgpost('http://www.yumdrop.com/ajax/messenger.php?mode=updatesh','id='+method);
g('estimatedTotal').innerHTML = total;
}