winSize = function() {
		var w = 0;
		var h = 0;
		//IE
		if(!window.innerWidth)
		{
			//strict mode
			if(!(document.documentElement.clientWidth == 0))
			{
				w = document.documentElement.clientWidth;
				h = document.documentElement.clientHeight;
			}
			//quirks mode
			else
			{
				w = document.body.clientWidth;
				h = document.body.clientHeight;
			}
		}
		//w3c
		else
		{
			w = window.innerWidth;
			h = window.innerHeight;
		}
		return {width:w,height:h};
	}
	var win_size = new winSize();
	function openEnter(url, name, width, height){
		var left_pos = win_size.width/2 - width/2 - 12;
		var top_pos = win_size.height/2 - height/2;
		window.open(url, '_blank', 'height=' + height + ', width=' + width + ', status=no, toolbar=no, menubar=no, location=no, scrollbars=yes, top=' + top_pos + ',left=' + left_pos + ' ');
	}