function cbformCheck() {

	if (document.callbackform.Name.value == "") {
		document.callbackform.Name.style.backgroundColor="pink";
		alert("Please enter your name");
		document.callbackform.Name.focus();
		return false;
	}else{
		document.callbackform.Name.style.backgroundColor="";
	}

	if (document.callbackform.Phone.value == ""){
		document.callbackform.Phone.style.backgroundColor="pink";
		var warningText="Please enter a valid telephone number";
		alert(warningText);
		document.callbackform.Phone.focus();
		return false;		
	}else{
		document.callbackform.Name.style.backgroundColor="";		
	}

  document.contactform.submit();

  }