function validate_contact(){
	var r = true;
	var form = document.getElementById("contact_us");
	var name = form.c_name.value;
	var telephone = form.c_telephone.value;
	var address = form.c_address.value;
	var postcode = form.c_postcode.value;
	var email = form.c_email.value;
	var message = form.c_message.value;
	
	if(name ==""){
		alert("Please provide your full name");
		r= false;
	}else if(telephone==""){
		alert("Please provide a contact telephone number");
		r = false;
	}else if(address==""){
		alert("Please provide your address");
		r = false;
	}else if(postcode.length <5){
		alert("Please provide your full postcode");
		r = false;
	}else if(email !="" && email.indexOf("@") <2){
		alert("Please provide a valid email address");
		r = false;
	
	}else if(email ==""){
		alert("Please provide an email address");
		r = false;
	}else if(message.length <20){
		alert("Please provide a message");
		r = false;
		
	}
	
	if(r == true){
		var c = confirm("Send Query?");
		if(c ==false){
		r = false;
	}
		
	}
	

	
	return r;
	
}