function log_out()
{
	ht = document.getElementsByTagName("html");
	ht[0].style.filter = "progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)";
	if (confirm('你确定要退出？'))
	{
		document.forms['LoginOut'].submit()
	}
	else
	{
		ht[0].style.filter = "";
		return false;
	}
}
/*显示验证码*/
function getVerifyCode() {
	if(document.getElementById("VerifyCodeImgID"))
		document.getElementById("VerifyCodeImgID").innerHTML = '<img src="VerifyCode.asp?t='+Math.random()+'" alt="点击刷新验证码" style="cursor:pointer;border:0;vertical-align:middle;" onclick="this.src=\'VerifyCode.asp?t=\'+Math.random()" />'
}
function CheckVerifyCode(VerifyCode) {
	var patrn=/^\d+$/;		//纯数字
	if(!patrn.exec(VerifyCode)) {
		ShowCheckResult("CheckVerifyCode", "请输入验证码！","error");
		return;
	}

	Ajax_CallBack(false,"CheckVerifyCode","Loading.asp?menu=CheckVerifyCode&VerifyCode=" + VerifyCode);
}