function GetRandom( min, max ) {
              if( min > max ) {                      return( -1 );              }
              if( min == max ) {                      return( min );              }
              return( min + parseInt( Math.random() * ( max-min+1 ) ) );
      }
function mark()
{
	document.getElementById('header').src = "http://wattenmeer.de/2009/template/header/header" + GetRandom( 1, 3 ) +".jpg";


var sDivMenu="mainm"; // Name des DIVs mit Menü
var oMenudiv= parent.document.getElementById(sDivMenu);
var sClassActive="aktiv";
var sClassInactive="inaktiv";

if (oMenudiv) {
	var oLinks = oMenudiv.getElementsByTagName("a");
	if (oLinks) for (var i = 0; i < oLinks.length; i++) {
		sClass=sClassInactive;
		//alert(window.location.href.indexOf(oLinks[i].name));
		if (window.location.href.indexOf(oLinks[i].name)>0) {

			// Menue-Punkt aktiv:

			// Klasse setzen. Link-Markierung entfernen
			oLinks[i].className=sClassActive;
			oLinks[i].blur();
		//	(...)
		} else {

			// Menue-Punkt inaktiv:
			//oLinks[i].className=sClassInactive;

		}
	}
}
var sDivMenu="menu"; // Name des DIVs mit Menü
var oMenudiv = parent.document.getElementById(sDivMenu);
var sClassActive="aktiv";
var sClassInactive="inaktiv";


if (oMenudiv) {
	var oLinks = oMenudiv.getElementsByTagName("a");
	if (oLinks) for (var i = 0; i < oLinks.length; i++) {
		sClass=sClassInactive;
		if (window.location.href.indexOf(oLinks[i].href)==0) {

			// Menue-Punkt aktiv:

			// Klasse setzen. Link-Markierung entfernen
			oLinks[i].className=sClassActive;
			oLinks[i].blur();
		//	(...)
		} else {

			// Menue-Punkt inaktiv:
			//oLinks[i].className=sClassInactive;

		}
	}
}
}

//create onDomReady Event
      window.onDomReady = initReady;
     
      // Initialize event depending on browser
      function initReady(fn)
      {
        //W3C-compliant browser
        if(document.addEventListener) {
          document.addEventListener("DOMContentLoaded", fn, false);
        }
        //IE
        else {
          document.onreadystatechange = function(){readyState(fn)}
        }
      }
     
      //IE execute function
      function readyState(func)
      {
        // DOM is ready
        if(document.readyState == "interactive" || document.readyState == "complete")
        {
                func();
        }
      }
      
      //execute as soon as DOM is loaded
      window.onDomReady(mark);




//setTimeout("mark()",400);
//setTimeout("mark()",1000);
//setTimeout("mark()",2000);