//Gradual-Highlight Image Script for IE 
//For full source code and more DHTML scripts, visit http://www.dynamicdrive.com
//This credit MUST stay intact for use

nereidFadeObjects = new Object();
nereidFadeTimers = new Object();

function nereidFade(object, destOp, rate, delta){
if (!document.all)
return
    if (object != "[object]"){
        setTimeout("nereidFade("+object+","+destOp+","+rate+","+delta+")",0);
        return;
    }
        
    clearTimeout(nereidFadeTimers[object.sourceIndex]);
    
    diff = destOp-object.filters.alpha.opacity;
    direction = 1;
    if (object.filters.alpha.opacity > destOp){
        direction = -1;
    }
    delta=Math.min(direction*diff,delta);
    object.filters.alpha.opacity+=direction*delta;

    if (object.filters.alpha.opacity != destOp){
        nereidFadeObjects[object.sourceIndex]=object;
        nereidFadeTimers[object.sourceIndex]=setTimeout("nereidFade(nereidFadeObjects["+object.sourceIndex+"],"+destOp+","+rate+","+delta+")",rate);
    }
}


//Gradual-Highlight Image Script-for Mozilla
//For full source code and more DHTML scripts, visit http://www.dynamicdrive.com
//This credit MUST stay intact for use

function high(which2){
theobject=which2
highlighting=setInterval("highlightit(theobject)",50)
}
function low(which2){
clearInterval(highlighting)
if (which2.style.MozOpacity)
which2.style.MozOpacity=0.3
else if (which2.filters)
which2.filters.alpha.opacity=30
}

function highlightit(cur2){
if (cur2.style.MozOpacity<1)
cur2.style.MozOpacity=parseFloat(cur2.style.MozOpacity)+0.1
else if (cur2.filters&&cur2.filters.alpha.opacity<100)
cur2.filters.alpha.opacity+=10
else if (window.highlighting)
clearInterval(highlighting)
}

//Image Rollover

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		preheader_homebut_over = newImage("bilder/preheader_homebut_over.gif");
		preheader_nextbut_over = newImage("bilder/preheader_nextbut_over.gif");
		preheader_backbut_over = newImage("bilder/preheader_backbut_over.gif");
		navibut_praxis_over = newImage("bilder/navibut_praxis_over.gif");
		navibut_team_over = newImage("bilder/navibut_team_over.gif");
		navibut_leistung_over = newImage("bilder/navibut_leistung_over.gif");
		navibut_kontakt_over = newImage("bilder/navibut_kontakt_over.gif");
		navibut_impressum_over = newImage("bilder/navibut_impressum_over.gif");
		preloadFlag = true;
	}
}