// popup window
function popup (url,name,width,height)
{
	open(url,name,"width="+width+",height="+height+",screenX=0,screenY=0");
}

// preload images
function preLoad (imgfile)
{
  Cache = new Image();
  eval ("Cache.src = \"img/" + imgfile+"\"");                                     
}

// onMouseOver switch function
function SwitchImage(imgSource,imgName)
{
	if (document.images[imgName])
	{
		document.images[imgName].src = imgSource;
		return true;
	}
}

function init()
{
	preLoad ('void.gif');		 
	preLoad ('navi_home_over.gif');
	preLoad ('navi_referenzen_over.gif');
	preLoad ('navi_dachkompass_over.gif');
	preLoad ('navi_links_over.gif');
	preLoad ('navi_anfahrt_over.gif');
	preLoad ('navi_kontakt_over.gif');
}