function CheckForm()
{
	if(document.UserLogin.UserName.value=="")
	{
		alert("请输入用户名！");
		document.UserLogin.UserName.focus();
		return false;
	}
	if(document.UserLogin.Password.value == "")
	{
		alert("请输入密码！");
		document.UserLogin.Password.focus();
		return false;
	}
	if (document.UserLogin.CheckCode.value=="")
	{
		alert ("请输入您的验证码！");
      		document.UserLogin.CheckCode.focus();
      		return(false);
   	}
}
function openScript(url)
{
	var Win = window.open(url,"UserControlPad");
}
function openScript2(url,width,height)
{
	var Win = window.open(url,"messpop",'width=' + width + ',height=' + height + ',resizable=1,scrollbars=yes,menubar=yes,status=yes' );
}
function CheckAll(form)
{
  for (var i=0;i<form.elements.length;i++)    {
	var e = form.elements[i];
	if (e.name != 'chkall')       e.checked = form.chkall.checked; 
   }
}

function refreshMe()
{
    window.refresh;
}

//下拉菜单相关代码
 var h;
 var w;
 var l;
 var t;
 var topMar = 1;
 var leftMar = -2;
 var space = 1;
 var isvisible;
 var MENU_SHADOW_COLOR='#999999';//定义下拉菜单阴影色
 var global = window.document
 global.fo_currentMenu = null
 global.fo_shadows = new Array

function HideMenu() 
{
 var mX;
 var mY;
 var vDiv;
 var mDiv;
	if (isvisible == true)
		{
		vDiv = document.all("menuDiv");
		mX = window.event.clientX + document.body.scrollLeft;
		mY = window.event.clientY + document.body.scrollTop;
		if ((mX < parseInt(vDiv.style.left)) || (mX > parseInt(vDiv.style.left)+vDiv.offsetWidth) || (mY < parseInt(vDiv.style.top)-h) || (mY > parseInt(vDiv.style.top)+vDiv.offsetHeight)){
			vDiv.style.visibility = "hidden";
			isvisible = false;
		}
		}

}

function ShowMenu(vMnuCode,tWidth) {
	vSrc = window.event.srcElement;
	vMnuCode = "<table id='submenu' cellspacing=1 cellpadding=3 style='width:"+tWidth+"' class=menu onmouseout='HideMenu()'><tr height=23><td nowrap align=left class=MenuBody>" + vMnuCode + "</td></tr></table>";

	h = vSrc.offsetHeight;
	w = vSrc.offsetWidth;
	l = vSrc.offsetLeft + leftMar+4;
	t = vSrc.offsetTop + topMar + h + space-2;
	vParent = vSrc.offsetParent;
	while (vParent.tagName.toUpperCase() != "BODY")
	{
		l += vParent.offsetLeft;
		t += vParent.offsetTop;
		vParent = vParent.offsetParent;
	}

	menuDiv.innerHTML = vMnuCode;
	menuDiv.style.top = t;
	menuDiv.style.left = l;
	menuDiv.style.visibility = "visible";
	isvisible = true;
    makeRectangularDropShadow(submenu, MENU_SHADOW_COLOR, 4)
}

function makeRectangularDropShadow(el, color, size)
{
	var i;
	for (i=size; i>0; i--)
	{
		var rect = document.createElement('div');
		var rs = rect.style
		rs.position = 'absolute';
		rs.left = (el.style.posLeft + i) + 'px';
		rs.top = (el.style.posTop + i) + 'px';
		rs.width = el.offsetWidth + 'px';
		rs.height = el.offsetHeight + 'px';
		rs.zIndex = el.style.zIndex - i;
		rs.backgroundColor = color;
		var opacity = 1 - i / (i + 1);
		rs.filter = 'alpha(opacity=' + (100 * opacity) + ')';
		el.insertAdjacentElement('afterEnd', rect);
		global.fo_shadows[global.fo_shadows.length] = rect;
	}
}

function zoom_img(e, o)
{
var zoom = parseInt(o.style.zoom, 10) || 100;
zoom += event.wheelDelta / 12;
if (zoom > 0) o.style.zoom = zoom + '%';
return false;
}

//双击鼠标滚动屏幕的代码
var currentpos,timer;
function initialize()
{
timer=setInterval ("scrollwindow ()",30);
}
function sc()
{
clearInterval(timer);
}
function scrollwindow()
{
currentpos=document.body.scrollTop;
window.scroll(0,++currentpos);
if (currentpos !=document.body.scrollTop)
sc();
}
document.onmousedown=sc
document.ondblclick=initialize
<!--
function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);
//-->