//--检测登陆-->
function DoLogin() {
	      var UsernameGet = trim(document.loginForm.UsernameGet.value);
		  var PasswordGet = trim(document.loginForm.PasswordGet.value);
		 // var verify_Safecode = trim(document.loginForm.verify_Safecode.value);
          if(UsernameGet == "") {
		    alert("请输入用户登录名！");
			document.loginForm.UsernameGet.focus();
		    return false;
		  } 
		  if(PasswordGet == "") {
		    alert("请输入密码！");
			document.loginForm.PasswordGet.focus();
		    return false;
		  } 
		 // if(verify_Safecode == "") {
		 //   alert("请输入验证码！");
		//	document.loginForm.verify_Safecode.focus();
		 //   return false;
		//  }
     return true;
 }
function trim(inputString) {
  if (typeof inputString != "string") { return inputString; }
  var retValue = inputString;
  var ch = retValue.substring(0, 1);
  while (ch == " ") { 
  //检查字符串开始部分的空格
	  retValue = retValue.substring(1, retValue.length);
	  ch = retValue.substring(0, 1);
  }
  ch = retValue.substring(retValue.length-1, retValue.length);
  while (ch == " ") {
	 //检查字符串结束部分的空格
	 retValue = retValue.substring(0, retValue.length-1);
	 ch = retValue.substring(retValue.length-1, retValue.length);
  }
  while (retValue.indexOf("  ") != -1) { 
 //将文字中间多个相连的空格变为一个空格
	 retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length); 
  }
  return retValue;
} 
//-->