var common=new function() {
	this.redirect=function(url)
	{
		window.location=url;
	}
	
	this.getXY=function(obj)
	{
		var curleft = curtop = 0;
		
		if (obj.offsetParent) {
			curleft = obj.offsetLeft
			curtop = obj.offsetTop
			while (obj = obj.offsetParent) {
				curleft += obj.offsetLeft
				curtop += obj.offsetTop
			}
		}

		return [curleft,curtop];
	};
}