function CheckLoginForm()
{
	window.execScript("document.Form1.txtUserName.value=trim(document.Form1.txtUserName.value)","vbscript");
	if (document.Form1.txtUserName.value.length < 1)
	{
		alert("请输入用户名!");
		document.Form1.txtUserName.value = "";
		document.Form1.txtUserName.focus();
		return false;
	}
	window.execScript("document.Form1.txtPassWord.value=trim(document.Form1.txtPassWord.value)","vbscript");
	if (document.Form1.txtPassWord.value.length < 1)
	{
		alert("请输入密码!");
		document.Form1.txtPassWord.value = "";
		document.Form1.txtPassWord.focus();
		return false;
	}
	window.execScript("document.Form1.txtValidCode.value=trim(document.Form1.txtValidCode.value)","vbscript");
	if (document.Form1.txtValidCode.value.length < 1)
	{
		alert("请输入验证码!");
		document.Form1.txtValidCode.value = "";
		document.Form1.txtValidCode.focus();
		return false;
	}
	document.Form1.submit();
	document.Form1.txtPassWord.value = "";
	return true;
}