window.onbeforeunload = function()
{
    var n = window.event.screenX - window.screenLeft;
    var b = n > document.documentElement.scrollWidth-20;

    if (b && window.event.clientY < 0 || window.event.altKey)
    {
        window.event.returnValue = "您尚未完成注册，建议完成注册找到心仪的她/他。"; 
		xajax_processFormEmail('','quit');
    }	
}