isPopup = document.getElementById('popupcontent');
if(isPopup){YAHOO.util.Event.addListener("back_link", "click", Venda.Widget.InvtPopups.featureHide);}

function validate(){

if (document.writereviewform.field1.value == '') {
		alert("Please enter a name.");
		document.writereviewform.field1.focus();
		return;
		}	
	
	
	if (document.writereviewform.from.value == '') {
		alert("Please enter a valid email address.");
		document.writereviewform.from.focus();
		return;
		}
		
	var checkEmail = document.writereviewform.from.value;
	if (!checkemail(checkEmail)) {
		alert("Please enter a valid email address.");
		document.writereviewform.from.focus();
		return;
	}
	
	document.writereviewform.field2.value=document.writereviewform.field2.value.replace(/-/g,"");
	
	document.writereviewform.field2.value=document.writereviewform.field2.value.replace(/ /g,"");
	
	var filterNumber = /[^\d]/;
	if (filterNumber.test(document.writereviewform.field2.value)==true) {
		alert('Please enter a phone number that contains no letters.');
		document.writereviewform.field2.focus();
		return;
	}
	
	var filter=/^0/;
	if (filter.test(document.writereviewform.field2.value)==false) {
		alert('Please enter a phone number beginning 0.');
		document.writereviewform.field2.focus();
		return;
	}
	
	if (document.writereviewform.field2.value.length!=10) {
		if (document.writereviewform.field2.value.length!=11) {
			alert('Please enter a phone number with 10 or 11 digits.');
			document.writereviewform.field2.focus();
			return;
		}
	}
	if (document.writereviewform.field2.value.length!=11) {
		if (document.writereviewform.field2.value.length!=10) {
			alert('Please enter a phone number with 10 or 11 digits.');
			document.writereviewform.field2.focus();
			return;
		}
	}
	if (document.writereviewform.field2.value==''){
		alert("Please enter your phone number.")
		document.writereviewform.field2.focus();
		return;
		}
		
	if (document.writereviewform.field6.value==''){
		alert("Please select a rating.")
		document.writereviewform.field6.focus();
		return;
		}
		
	if (document.writereviewform.field3.value==''){
		alert("Please provide your review.")
		document.writereviewform.field3.focus();
		return;
		}

	
	if(isPopup){ 
		document.writereviewform.layout.value = 'noheaders';
		ajaxFunction('http://www.studiospares.com/bin/venda','popupcontent','writereviewform');
		}
	else { 
		document.writereviewform.submit();
		}
}