var parenturl = window.location;
function challengepopup(url) {
	wind2 = window.open('/form/tellafriend.htm','page','toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=570,left=50,top=50,titlebar=yes')
	wind2.targeturl = ("undefined" == typeof url) ? document.referrer : url;
}

function challengepopupru(url) {
	wind2 = window.open('/form/tellafriendru.htm','page','toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=570,left=50,top=50,titlebar=yes')
	wind2.targeturl = ("undefined" == typeof url) ? document.referrer : url;	
}

function showfullfeedback(obj)
{
	obj.parentElement.nextElementSibling.style.display = "block";
	obj.style.display="none";
}

function trim(str)
{
	return str.replace(/^\s+|\s+$/g, '')
}

function setFocus(layerName)
{
	var layer = document.getElementById(layerName);
	var focusIt = layer.getElementsByTagName('a')[0];
	focusIt.focus();
}


function showRegForm()
{
	document.getElementById("brief").style.display = "block";
	document.getElementById('frm').scrollIntoView(true);
}

function showFAQ()
{
	document.getElementById("faq").style.display = "block";
	document.getElementById('faq').scrollIntoView(true);
}
		
	
function check_form()
{
	var mailfield = document.getElementById('frmmail');
	var name = document.getElementById('frmname');
  
	var tfld =trim(mailfield.value); 
	var email = /^[^@]+@[^@.]+\.[^@]*\w\w$/
	if (!email.test(tfld)) 
	{
		alert(invalidMailStr)
	 	mailfield.focus();
		return false;
   }

	if ("" == trim(name.value))
	{
		alert(invalidNameStr);
		name.focus();
		return false;
	}
	
	return true;
}