// ----------------------------------------------------------------------------------------
// scripts for the rollover-effect in the main navigation bar
// ----------------------------------------------------------------------------------------

var selectedtopic = 0;
var topicsPresent = 4;
var path = "http://www.kb-service.ch/_mainnav/";

URL = location.href;

if (document.images)	{
	picturesMainDef = new Array();
		for (i = 1; i <= topicsPresent ; i++)	 {
			picturesMainDef[i] = new Image();
			picturesMainDef[i].src = path + "nav_"	+ i + "d.png";}
	
	picturesMainHi = new Array();
		for (i = 1; i <= topicsPresent; i++)	 {
			picturesMainHi[i] = new Image();
			picturesMainHi[i].src = path + "nav_"	+ i + "h.png";}
			
}

function changePic(picNum)	 {
	if (document.images)	{
		eval("document.topic" + picNum + ".src = picturesMainHi[picNum].src;");
		}
}

function resetPic()	 {
	if (document.images)	{
		for (i = 1; i <= topicsPresent; i++)	 {
			if ( i != selectedtopic) {
			eval("document.topic" + i + ".src = picturesMainDef[i].src;");
					}
		}
	}
}

function checkTopic() {
	URL=location.href
	if (document.images) {
	resetPic();

	if (URL.indexOf("?cat=prices") != -1) selectedtopic = 2;
	if (URL.indexOf("?cat=reg") != -1) selectedtopic = 3;
	if (URL.indexOf("?cat=contact") != -1) selectedtopic = 4;

	
	
	if (selectedtopic != 0) {
		eval("document.topic" + selectedtopic + ".src = picturesMainHi[selectedtopic].src;");}
		
	}
}

// -->