// Zur Browser-Erkennung
var Browser = navigator.userAgent;
var Version = parseInt(navigator.appVersion);
var IsIB = Browser.indexOf("IBrowse") != -1;
var IsOp = Browser.indexOf("Opera") != -1;
var IsIE = Browser.indexOf("MSIE") != -1;
var IsNS = Browser.indexOf("Mozilla") != -1 && (!IsIE);
var IsStupid = (IsNS && Version<=3) || (IsIE && Version <= 3);
	
function wireRollOver(img)
{
	var ExtensionPos = img.src.lastIndexOf(".");

	if (ExtensionPos != -1)
	{
		var Extension = img.src.substring(ExtensionPos+1);
		var Fragment = img.src.substring(ExtensionPos-8,ExtensionPos);

		if (Fragment == "_passive")
		{
			var Base = img.src.substring(0,ExtensionPos-8);
			img.activesrc = Base + "_active." + Extension;
			img.passivesrc = img.src;
		}
	}
}

function preload(imgname)
{
		var newimg = new Image();
		newimg.src = imgname;
}

function over(img)
{
	if (IsStupid)
		return;
	if (!img.activesrc)
		wireRollOver(img);
	img.src = img.activesrc;
}

function out(img)
{
	if (IsStupid)
		return;
	if (!img.passivesrc)
		wireRollOver(img);
	img.src = img.passivesrc;
}

preload("../Images/Pfeile/home_active.gif");
preload("../Images/Pfeile/child_active.gif");
preload("../Images/Pfeile/parent_active.gif");
preload("../Images/Pfeile/next_active.gif");
preload("../Images/Pfeile/previous_active.gif");
preload("../Images/Pfeile/download_active.gif");