function Trim(inputString) {
	var retValue = inputString;
	var ch = retValue.substring(0, 1);
	while (ch == " ") { // Check for spaces at the beginning of the string
		retValue = retValue.substring(1, retValue.length);
		ch = retValue.substring(0, 1);
	}
	ch = retValue.substring(retValue.length-1, retValue.length);
	while (ch == " ") { // Check for spaces at the end of the string
		retValue = retValue.substring(0, retValue.length-1);
		ch = retValue.substring(retValue.length-1, retValue.length);
	}
	return retValue; // Return the trimmed string back to the user
} //


function ValidateEmail(txtEmail){
	var msgEnterValidEmail = "Please enter a valid E-mail address.\n\nExample: yourname@domain.com"
	var sEmail = Trim(txtEmail.value)
	txtEmail.value = sEmail
	var regex = /^[a-zA-Z0-9._-]+@([a-zA-Z0-9.-]+\.)+[a-zA-Z0-9.-]{2,4}$/;
	if(sEmail != ''){
		if(!regex.test(sEmail)){
			alert(msgEnterValidEmail)
			txtEmail.focus();
			return false
		}
	}
	return true
}

function IsBlankString(sStr){
	for ( var i = 0 ; i < sStr.length ; i++ ) {
		var ch = sStr.substring( i, i + 1 );
		if (ch != ' ') {
			return false;
		}
	}
	return true;
}