document.onmouseup = function(ev)
{
	// onclick 只能捕捉到单击 onmouseup可以捕捉到单击双击和右键点击
	// 此脚本对flash及其他ActiveX对象无效
	
	// 对于HTML和XHTML文档, 获得对象坐标和位置的方式不一样
	var doc = document.compatMode == 'CSS1Compat'? document.documentElement : document.body;
	
	// IE 和 Firefox 的事件获得方式不一样
	ev = ev || window.event;
	var target = ev.target || ev.srcElement;

	var click = false;
	
	if (target.nodeName == 'INPUT' && (target.type == 'button' || target.type == 'submit' || target.type == 'image'))
	{
		//检查是不是点击的按钮
		click = true;
	}
	else
	{
		//检查点击的是不是链接
		while (target.nodeName != 'HTML' && target.nodeName != 'BODY')
		{
			if (target.nodeName == 'A')
			{
				click = true;
				break;
			}
			else
			{
				target = target.parentNode;
			}
		}
	}	
	
	if (click)
	{
		var x = ev.clientX + doc.scrollLeft;
		var y = ev.clientY + doc.scrollTop;
		
		var image = document.createElement('IMG');
		image.src = 'http://clickn.soufun.com/click/click_stats.php?width=' + screen.width + '&x=' + x + '&y=' + y;
		image.width = 0;
		image.height = 0;
		document.body.appendChild(image);
	}
}