function openpopup(daurl){
	var articles = window.open (daurl,'articles','scrollbars=1,width=500');
	articles.focus()
} 

function emailValidate(daform){

	//alert(document.forms[formname].elements['email'].value);
	
	emailaddress = daform.email.value
	
	var at="@"
	var dot="."
	var lat=emailaddress.indexOf(at)
	var lstr=emailaddress.length
	var ldot=emailaddress.indexOf(dot)
	var goodaddress = true;
	
	if (emailaddress.indexOf(at)==-1){
		goodaddress = false;
	} else if (emailaddress.indexOf(at)==-1 || emailaddress.indexOf(at)==0 || emailaddress.indexOf(at)==lstr){
		goodaddress = false;
	} else if (emailaddress.indexOf(dot)==-1 || emailaddress.indexOf(dot)==0 || emailaddress.indexOf(dot)==lstr){
		goodaddress = false;
	} else if (emailaddress.indexOf(at,(lat+1))!=-1){
		goodaddress = false;
	} else if (emailaddress.substring(lat-1,lat)==dot || emailaddress.substring(lat+1,lat+2)==dot){
		goodaddress = false;
	} else if (emailaddress.indexOf(dot,(lat+2))==-1){
		goodaddress = false;
	} else if (emailaddress.indexOf(" ")!=-1){
		goodaddress = false;
	}

	if (!goodaddress){
		alert("That is not a valid email address.  Please try again.");
	}
	return goodaddress;
		

}