function ValidateLogin()
{
    // If user's info has been validated (via Ajax), then allow the login request to submit
    if(document.all.CanLogin.value == 1)
        return true;

    // Call Ajax to validate login info
    var ValidateURL = "/app/blitz/viewjob_ajx_validatelogin.php?usr=" + URLEncode(document.all.usr_email.value) + "&pwd=" + URLEncode(document.all.usr_password.value);

    xmlHttp=GetXmlHttpObject()
    if (xmlHttp==null)
    {
      alert ("Your browser does not support AJAX!");
      return false;
    }
    xmlHttp.onreadystatechange=ValidateLoginReturn;
    xmlHttp.open("GET",ValidateURL,true);
    xmlHttp.send(null);

    return false;
}

function ValidateLoginReturn()
{
    if(xmlHttp.responseText == "1")
    {
        document.all.CanLogin.value = 1;
        document.all.LoginFrm.submit();
    }
    else
    {
        document.all.LoginError.innerHTML = "<font color=#990000>Invalid Email and / or Password - Please Try Again.</font>";
    }

    return false;
}

function URLEncode (clearString)
{
    var output = '';
    var x = 0;
    clearString = clearString.toString();
    var regex = /(^[a-zA-Z0-9_.]*)/;
    while (x < clearString.length) {
      var match = regex.exec(clearString.substr(x));
      if (match != null && match.length > 1 && match[1] != '') {
      	output += match[1];
        x += match[1].length;
      } else {
        if (clearString[x] == ' ')
          output += '+';
        else {
          var charCode = clearString.charCodeAt(x);
          var hexVal = charCode.toString(16);
          output += '%' + ( hexVal.length < 2 ? '0' : '' ) + hexVal.toUpperCase();
        }
        x++;
      }
    }
    return output;
}