// some known objects
var nc      =  !!(document.captureEvents    &&  !document.getElementById);
var nc6     =  !!(document.captureEvents    &&  document.documentElement);
var opera   =  !!(document.getElementById   &&  !document.documentElement);
var ie      =  !!document.all;
var ie4     =  !!(document.all              &&  !document.documentElement);
var ie5     =  !!(document.all              &&  document.documentElement);
var dom     =  !!document.getElementById;
var mac     =  !!(navigator.userAgent.indexOf("Mac") != -1);


function doIFrame(url) {
   document.getElementById("showVideo").width= "580";
   document.getElementById("showVideo").height= "280";
   document.getElementById("showVideo").src = url;
}

var popup    =  0;

function init() {
	window.onfocus =  checkPop;
}


function pop(id) {
	var x = screen.availWidth/2  - 212;
	var y = screen.availHeight/2 - 212;
	popup = open(id + ".htm","","width=500,height=330,toolbar=no,menubar=no,scrollbars=no,resizable=no,scrollbars=yes,top="+y+",left="+x);
}
function checkPop() {
	if (popup) popup.close();
}

function setPopupFalse() {
	onerror = function() {
		return true;
	}
	if (opener && !opener.closed && opener.popup) {
		opener.popup =  0;
	}
	onerror = function() {
		return false;
	}
}

images_large = new Array ("Bilder/Banner_large01.gif","Bilder/Banner_large02.gif","Bilder/Banner_large03.gif","Bilder/Banner_large04.gif","Bilder/Banner_large05.gif","Bilder/Banner_large06.gif","Bilder/Banner_large07.gif","Bilder/Banner_large08.gif","Bilder/Banner_large09.gif","Bilder/Banner_large10.gif","Bilder/Banner_large11.gif","Bilder/Banner_large12.gif")  ;
var number_large = Math.round( (images_large.length-1) * Math.random());
var image_large = images_large[number_large];


images_medium = new Array ("Bilder/Banner_medium01.gif","Bilder/Banner_medium02.gif","Bilder/Banner_medium03.gif","Bilder/Banner_medium04.gif","Bilder/Banner_medium05.gif","Bilder/Banner_medium06.gif","Bilder/Banner_medium07.gif") ; 
var number_medium = Math.round( (images_medium.length-1) * Math.random());
var image_medium = images_medium[number_medium];

images_small = new Array ("Bilder/Banner_small01.gif","Bilder/Banner_small02.gif","Bilder/Banner_small03.gif","Bilder/Banner_small04.gif","Bilder/Banner_small05.gif","Bilder/Banner_small06.gif","Bilder/Banner_small07.gif","Bilder/Banner_small08.gif","Bilder/Banner_small09.gif","Bilder/Banner_small10.gif","Bilder/Banner_small11.gif","Bilder/Banner_small12.gif","Bilder/Banner_small13.gif","Bilder/Banner_small14.gif")  ;


collected = new Array();
for( i = 0; i < images_small.length -2 ; ++i)
{
	collected[i] = false ;
}

selectedImages = new Array();
for( i = 0; i < 11 ; ++i)
{
	while( i < (images_small.length -1)  )
	{
		var index = Math.round( (images_small.length-1) * Math.random());
		if(collected[index] != true)
		{
			selectedImages[i] = images_small[index];
			collected[index] = true;
			break;	
		}
	}
}