function Go(x)
   {
    if(x == "nothing")
    {
      document.forms[0].reset();
      document.forms[0].elements[0].blur();
      return;
    }
    else
    {
      parent.top.location.href = x;
      document.forms[0].reset();
      document.forms[0].elements[0].blur();
    }
  }
  function checkPLZ(x)
  {
    if ( x.length < 2 )
    {
    	alert("Bitte mindestens eine zweistellige Postleitzahl eingeben!");
	return false;
    }
    else
    {
        if ( x.length > 5 )
	{
	   alert("Bitte hoechstens 5 Ziffern eingeben!");
	   return false;
	}
	else
	{
	   return true;
	}
    }
  }

function diashow()
{
var dia = new Array ("http://www.drk.de/images/head_banner/head_banner1.jpg", "http://www.drk.de/images/head_banner/head_banner2.jpg", "http://www.drk.de/images/head_banner/head_banner3.jpg", "http://www.drk.de/images/head_banner/head_banner4.jpg", "http://www.drk.de/images/head_banner/head_banner5.jpg", "http://www.drk.de/images/head_banner/head_banner6.jpg", "http://www.drk.de/images/head_banner/head_banner7.jpg", "http://www.drk.de/images/head_banner/head_banner8.jpg", "http://www.drk.de/images/head_banner/head_banner9.jpg", "http://www.drk.de/images/head_banner/head_banner10.jpg", "http://www.drk.de/images/head_banner/head_banner11.jpg", "http://www.drk.de/images/head_banner/head_banner12.jpg", "http://www.drk.de/images/head_banner/head_banner13.jpg", "http://www.drk.de/images/head_banner/head_banner14.jpg", "http://www.drk.de/images/head_banner/head_banner15.jpg", "http://www.drk.de/images/head_banner/head_banner16.jpg","http://www.drk.de/images/head_banner/head_banner17.jpg","http://www.drk.de/images/head_banner/head_banner18.jpg","http://www.drk.de/images/head_banner/head_banner19.jpg","http://www.drk.de/images/head_banner/head_banner20.jpg","http://www.drk.de/images/head_banner/head_banner21.jpg","http://www.drk.de/images/head_banner/head_banner22.jpg","http://www.drk.de/images/head_banner/head_banner23.jpg","http://www.drk.de/images/head_banner/head_banner24.jpg","http://www.drk.de/images/head_banner/head_banner25.jpg","http://www.drk.de/images/head_banner/head_banner26.jpg","http://www.drk.de/images/head_banner/head_banner27.jpg","http://www.drk.de/images/head_banner/head_banner28.jpg","http://www.drk.de/images/head_banner/banner_a.jpg", "http://www.drk.de/images/head_banner/banner_b.jpg", "http://www.drk.de/images/head_banner/banner_c.jpg", "http://www.drk.de/images/head_banner/banner_d.jpg");
var max = dia.length-1 ;
var a = Math.round(max*Math.random());

//alert (a);
window.document.images[0].src=dia[a];

window.setTimeout ('diashow ()' , 20000)
}