function contactusValidation()
{
	if($("firstname").value=='')
	{
		$("errElem").innerHTML="FirstName cannot be empty.";
		$("firstname").select();
		$("firstname").focus();
		return false;
	}
	if($("email").value=='')
	{
		$("errElem").innerHTML="Email cannot be empty.";
		$("email").select();
		$("email").focus();
		return false;
	}
	try
	{
		emailCheck(trim($("email").value));
	}
	catch (e)
	{
		$("errElem").innerHTML=e.message;
		$("email").select();
		$("email").focus();
		return false;
	}	
	if($("subject").value=='')
	{
		$("errElem").innerHTML="Subject cannot be empty.";
		$("subject").select();
		$("subject").focus();
		return false;
	}
    if($("message").value=='')
	{
		$("errElem").innerHTML="Message cannot be empty.";
		$("message").select();
		$("message").focus();
		return false;
	}
}