<!--

var fenster = null;

// Popup Funktion -----------------------------------------------------------------------

function popup(address,x_cor,y_cor,name,scrollbars,menu) {	

		var lmargin = (screen.width - x_cor) / 2;
		var tmargin = (screen.height - y_cor) / 2;

		var str = "height="+ y_cor;
		str += ",width=" + x_cor;
  		str += ",resize=no";
		str += ",top=" + tmargin;
		str += ",left=" + lmargin;
  		str += ",scrollbars="+ scrollbars;
		str += ",menubar="+ menu;

		if (fenster) {
			fenster.close();
		}

  	fenster = window.open(address,name,str);
    fenster.document.open();
    fenster.location.href = address;
		fenster.opener = window;
		fenster.opener.name = "bio_mainframe";    
    fenster.focus();   
 
};


function refreshpopup(address,x_cor,y_cor,name,scrollbars,menu) {

		var lmargin = (screen.width - x_cor) / 2;
		var tmargin = (screen.height - y_cor) / 2;

		var str = "height="+ y_cor;
		str += ",width=" + x_cor;
  		str += ",resize=no";
		str += ",top=" + tmargin;
		str += ",left=" + lmargin;
  		str += ",scrollbars="+ scrollbars;
		str += ",menubar="+ menu;

  	    fenster = window.open("",name,str); 


		if (fenster.window.location.href == 'about:blank') {

  	    	fenster = window.open(address,name,str);
			fenster.opener = window;
			fenster.opener.name = "bio_mainframe";    
			fenster.focus();

		} else {

    		fenster.focus();

		}

};

// Popup Funktion für Formular ----------------------------------------------------------

function popupnewsletter(form,x_cor,y_cor,name) {

		var lmargin = (screen.width - x_cor) / 2;
		var tmargin = (screen.height - y_cor) / 2;
        var str = "height="+ y_cor;
		str += ",width=" + x_cor;
  		str += ",resize=no";

		str += ",top=" + tmargin;
		str += ",left=" + lmargin;
  	
  	    fenster = open("",name,str);
    	fenster.focus();
        fenster.document.open();
        fenster.location.href = "/features/newsletter.php?preim_newsletter=" + document.preim_newsletter.preim_newsletter.value;             
        fenster.document.close();
		return false;

};


// Validierung Suchanfrage --------------------------------------------------------------

function valid(form) {
  var field = form.fastsearch;  
  var Test 	= field.value; 
  
  if (!Test) {
    alert("Bitte geben Sie einen Suchbegriff an");
    return false;
  } else if (Test.length < 3) {
    alert("Bitte geben Sie einen Suchbegriff mit mindestens 3 Zeichen an");
    return false;
  }
}


function checkRequiredFields(input)
{
	var requiredFields = new Array(
	"topic", "name","email"
	);

	var fieldNames = new Array(
	"Thema\n", "Name\n","E-Mail Adresse\n"
	);

	var fieldCheck   = true;
	var fieldsNeeded = "\nFolgende Felder müssen ausgefüllt werden:\n\n";

	for(var fieldNum=0; fieldNum < requiredFields.length; fieldNum++) {
		if ((input.elements[requiredFields[fieldNum]].value == "") ||
			(input.elements[requiredFields[fieldNum]].value == " ")) {
				fieldsNeeded += fieldNames[fieldNum] + "\n";
				fieldCheck = false;
		}
	}

	// all required fields have been entered

	if (fieldCheck == true) {
		if (emailCheck(input.email)) {
			return true;
		} else {
			return false;
		}
	} else // some required fields are missing values
	{
		alert(fieldsNeeded);
		return false;
	}
}

// -------------------------------------------------------------------------

function emailCheck (emailStr) {
	emailStr = emailStr.value;
	var emailPat=/^(.+)@(.+)$/
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
	var validChars="\[^\\s" + specialChars + "\]"
	var quotedUser="(\"[^\"]*\")"
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
	var atom=validChars + '+'
	var word="(" + atom + "|" + quotedUser + ")"
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")

	var matchArray=emailStr.match(emailPat)

	if (matchArray==null) {
		alert("Die EMail Adresse ist ungültig\n(überprüfen Sie bitte '@' und '.' Zeichen)")
		return false
	}

	var user=matchArray[1]
	var domain=matchArray[2]

	if (user.match(userPat)==null) {
	    alert("In der EMail Adresse scheint der Name vor dem @ Zeichen ungültig zu sein.")
    	return false
	}

	var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) {
    	for (var i=1;i<=4;i++) {
	    	if (IPArray[i]>255) {
	        	alert("Ziel IP Netz ist nicht gültig!")
				return false
	  		}
    	}
    	return true
	}

	var domainArray=domain.match(domainPat)
	if (domainArray==null) {
		alert("In der EMail Adresse scheint die Domain nicht gültig zu sein.")
    	return false
	}

	var atomPat=new RegExp(atom,"g")
	var domArr=domain.match(atomPat)
	var len=domArr.length
	if (domArr[domArr.length-1].length<2 || 
    	domArr[domArr.length-1].length>3) {
		alert("Die EMail Adresse sollte mit einer gültigen Domain enden.\n(z.B. @biosicherheit.de)")
   		return false
	}

	if (len<2) {
   		var errStr="In der EMail Adresse fehlt der Hostname!!"
   		alert(errStr)
   		return false
	}

	return true;
}


//-->