// This function will validate a form
// Written by: Thi Thach
// Date: 16 May 2007 9:06am

function validateForm(theform, formname)
{
	pass = 1; //assume everything is ok
	msg = "The following problem was found in trying to submit this form:\n\n";
	
	
	//Check enquiry form or contact us form
	//======================================
	
	
	
	if (isEmpty(theform.realname.value))
	{
		msg = msg + "- Name cannot be empty\n";
		pass = 0;
	}

			
	//make sure required fields are not empty
	if (isEmpty(theform.email.value))
	{
		msg = msg + "- Email address cannot be empty\n";
		pass = 0;
	}
	else
	{		
		//validate the email address
		if (!(isEmail(theform.email.value)))
		{
			msg = msg + "- Please enter a valid email address\n";
			pass = 0;
		}
	}			
	
	
	if (isEmpty(theform.comments.value))
	{
		msg = msg + "- Message cannot be empty\n";
		pass = 0;
	}
	
			
	
	if (pass == 1)
	{
		return true;
	}
	else
	{
		alert(msg);
		return false;
	}
  
}

function isEmpty (s) {
	var p = /\S+/;
	return !p.test(s);
}

function isEmail(string) {
    if (string.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
        return true;
    else
        return false;
}

//Check whether it is numeric value or not
//e = event
function AllowNumber(e)
{
	var keyCode = (isNetScape) ? e.which : e.keyCode;
	var ckey =  String.fromCharCode(keyCode);
	
	for (i=0; i<filter.length; i++)
	{
		if (filter[i] == ckey)
			return true;
	}
		
	return false;
}