function CheckUsernameTextBox() {
	if (frmLogin.UserID.value=='') {
		frmLogin.UserID.value='Username';
	}
}

function CheckPasswordTextBox() {
	if (frmLogin.UserPWD.value=='') {
		frmLogin.UserPWD.value='Password';
	}	
}

function PasswordBoxFocus() {
	document.getElementById('pwTSpan').style.display='none'; 
	document.getElementById('pwSpan').style.display=''; 
	frmLogin.UserPWD.focus(); 	
	frmLogin.UserPWD.value='';
}

function CheckForm(form) {
	if (form.UserID.value == "") {
	   alertmsg = "Please enter a Username!";
	   alert(alertmsg);
	}
	else if (form.UserPWD.value == "") {
		alertmsg = "Please enter a password!";
	   	alert(alertmsg);
	}	
	else if (!IsMailValid(trim(form.frmEMail.value))) {
		alertmsg = "Please enter a valid e-mail address!";
	   	alert(alertmsg);
	}
	else {
		form.submit();
	}
}

function IsMailValid(strEmail) {
	if(window.RegExp) {
		var reg1str = /^([\w\-\.]+)@((\[([0-9]{1,3}\.){3}[0-9]{1,3}\])|(([\w\-]+\.)+)([a-zA-Z]{2,4}))$/;
		var reg = new RegExp(reg1str);
		if (!reg.test(strEmail)) { return false; }
		else { return true; }
	}
}

function trim(inputString) {
   if (typeof inputString != "string") { return inputString; }
   var retValue = inputString;
   var ch = retValue.substring(0, 1);
   while (ch == " ") {
      retValue = retValue.substring(1, retValue.length);
      ch = retValue.substring(0, 1);
   }
   ch = retValue.substring(retValue.length-1, retValue.length);
   while (ch == " ") {
      retValue = retValue.substring(0, retValue.length-1);
      ch = retValue.substring(retValue.length-1, retValue.length);
   }
   while (retValue.indexOf("  ") != -1) {
      retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length);
   }
   return retValue;
}