function contactUsCheck() {
  if (isContactUsNickname('contactus') && isContactUsEmail('contactus') && isContactUsContent('contactus'))
    return true;
  else
    return false;
}

function isContactUsNickname(formName) {
	if (document.forms[formName].name.value == "") {
		alert ("");
		document.forms[formName].name.focus();
		return false;
	}
	return true;
}

function isContactUsContent(formName) {
	if (document.forms[formName].content.value == "") {
		alert ("");
		document.forms[formName].content.focus();
		return false;
	}
	return true;
}

function isContactUsEmail(formName) {
	var emailString = document.forms[formName].email.value;
	var emailFilter = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
	if (document.forms[formName].email.value == "") {
		alert ("");
		document.forms[formName].email.focus();
		return false;
	}
	else if (!emailFilter.test(emailString)) {
		alert ("");
		document.forms[formName].email.focus();
		return false;
	}
	return true;
}

var popUnderScript = '<SCRIPT LANGUAGE="JavaScript">ord=Math.random()*10000000000000000;document.write("<SCRIPT LANGUAGE=\\\"JavaScript\\\" SRC=\\\"http://ad.fr.doubleclick.net/adj/venustv-reseau.com/popunder;sz=250x250;ord=" + ord + "?\\\" ><\\\/SCRIPT>");</SCRIPT><NOSCRIPT><A HREF="http://ad.fr.doubleclick.net/jump/venustv-reseau.com/popunder;sz=250x250;ord=123456789?" TARGET="_blank"><IMG SRC="http://ad.fr.doubleclick.net/ad/venustv-reseau.com/popunder;sz=250x250;ord=123456789?" WIDTH="250" HEIGHT="250" BORDER="0" ALT=""></A></NOSCRIPT>';

function openPopunder(){
  w = window.open('','','scrollbars=yes,resizable=yes,width=300,height=300');
  w.document.write(popUnderScript);
  self.focus();
}
openPopunder();