function validatecontactus()
{	
	var s1=getVal('fullname');
	var s2=getVal('email');
	var s3=getVal('address');
	var s4=getVal('phoneno');
	var s5=getVal('msg');

	
	if(s1=="" || s1=="Your Name")
	{
		alert("Full Name field is empty.");
		return false;
	}
	
	if(s3=="")
	{
		alert("Address field is empty.");
		return false;
	}
	if(s2=="")
	{
		
		alert("Email address field is empty.");		
		return false;
	}
	if(s2!="")
	{
		if((emailverify(s2)) == false)
		{
			alert("Invalid email address.");
			return false;
		}
		
	}
	if(s4=="")
	{
		alert("Phone no. field is empty.");
		return false;
	}
	if(s5=="")
	{
		alert("Message field is empty.");
		return false;
	}
	
	return true;
}