var currentClientHeight = 0 ;
var resizeWindow = function () 
{
	if (currentClientHeight != document.documentElement.clientHeight) 
	{
		var menu = document.getElementById('mainMenu');
		var header = document.getElementById('header');
		var bg = document.getElementById('bg');
		if(parseInt(navigator.appVersion)>3) 
		{
			if(navigator.appName=="Netscape") 
			{
				winW = window.innerWidth;
				winH = window.innerHeight;
			}
			if(navigator.appName.indexOf("Microsoft")!=-1) 
			{
				winW = document.documentElement.clientWidth;
				winH = document.documentElement.clientHeight;
			}
			changeBgWidth = winW - 16+'px' ;
			changeWidth = winW - 367+'px';
			changeHeight = winH - 144+'px';
			if(window.XMLHttpRequest)
			{
				if(!window.ActiveXObject)
				{//FF、GOOGLE
					menu.style.minHeight = changeHeight;
				}
				else
				{//IE7以上
					menu.style.minHeight = changeHeight;
				}
			}
			else
			{//IE6
				menu.style.height = changeHeight;
			}
			header.style.width = changeWidth;
			bg.style.width = changeBgWidth ;
		}
	}
	currentClientHeight = document.documentElement.clientHeight;
};