function tuichu(url)
{
	document.getElementsByTagName("body")[0].style.filter = "progid:dXImageTransform.Microsoft.BasicImage(grayscale=1)";
	if(confirm("确实要退出吗？")){
    //window.location.href="/pub/loginOut.jsp?url="+(url?replace(url,"&","%26"):"/blog");
    window.location.href="/pub/loginOut.jsp?url="+(url?url.replace("&","%26"):"/blog");
	}else{
	
		document.getElementsByTagName("body")[0].style.filter = "";
	}
}
function keyDown(e) {
	if (window.navigator.userAgent.indexOf("MSIE")>=1)
	{
		if (parseInt(navigator.appVersion)==4) {
			var ieKey=event.keyCode; 
			var nKey=0;
			if (ieKey==13)
			{
				if(IsS){
					document.f1.submit();
				}else{
					doLogin();
				}
			}
		}
	}
}
function doLogin()
{
	var f1=document.login;
	if(doLoginChk(f1.LoginID,f1.Password)==false){
		return false;
	}
	f1.submit();
}
function doLoginChk(LoginIDObj,PasswordObj)
{
	LoginIDObj.value=trim(LoginIDObj.value);
	PasswordObj.value=trim(PasswordObj.value);
	var uname = LoginIDObj.value;
	var password = PasswordObj.value;
	var strChk='_1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';

	if(uname=='')
	{
		alert("用户名不能为空！");
		LoginIDObj.focus();
		return false;
	}else if(!chkStr(strChk,uname))
	{
		alert("用户名只能是数字或者英文字母！");
		LoginIDObj.focus();
		return false;
	}
	else if(password=='')
	{
		alert("密码不能为空！");
		PasswordObj.focus();
		return false;
	}
	else if(!chkStr(strChk,password))
	{
		alert("密码只能是数字或者英文字母！");
		PasswordObj.focus();
		return false;
	}
	return true;
}