function active(source)
{
	source.src = 'images/'+source.alt+'_active.gif';
}
function unactive(source)
{
	source.src = 'images/'+source.alt+'.gif';
}


function validate()	{
	
	$("#name").removeClass('red');
	$("#number").removeClass('red');
	$("#message").removeClass('red');
	$("#email").removeClass('red');
	
	var name = $("#name").val();
	var number = $("#number").val();
	var message = $("#message").val();
	var email = $("#email").val();
	
	
	if(name == '')
	{
		alert('Please enter your name');
		$("#name").addClass('red');
		$("#name").focus();
		return false;
	}
	
	if(number == '')
	{
		alert('Please enter your contact number');
		$("#number").addClass('red');
		$("#number").focus();
		return false;
	}
	
	if(email == '')
	{
		alert('Please enter your email');
		$("#email").addClass('red');
		$("#email").focus();
		return false;
	}

	if(email != '')
	{
		if(echeck(email)==false)
		{
			alert('Please enter a valid email address');
			$("#email").addClass('red');
			$("#email").focus();
			return false;
		}
	}
	
	if(message == '')
	{
		alert('Please enter a message');
		$("#message").addClass('red');
		$("#message").focus();
		return false;
	}
	
	//captcha enable
	check(); //launches function captchaFalse or captchaTrue below from js/captcha.js
		return false;
	//-------	
	
}