// General JavaScript Functions

function preloadImages() 
{
	var produkte = new Image();
	produkte.src = "images/header_produkte_hover.gif";
	var specials = new Image();
	specials.src = "images/header_specials_hover.gif";
	var gastro = new Image();
	gastro.src = "images/header_gastro_hover.gif";
	
	var unternehmen = new Image();
	unternehmen.src = "images/footer_unternehmen_hover.gif";
	var presse = new Image();
	presse.src = "images/footer_presse_hover.gif";
	var bilder_und_logos = new Image();
	bilder_und_logos.src = "images/footer_bilder_und_logos_hover.gif";
	var kontakt = new Image();
	kontakt.src = "images/footer_kontakt_hover.gif";
}

function hoverImage (id, name)
{
	if (document.images) 
	{
		document.getElementById(id).src = '../images/' + name;
	}
}


function showLayer (id)
{
	document.getElementById(id).style.display = 'block';
}


function hideLayer (id)
{
	document.getElementById(id).style.display = 'none';
}


function MM_jumpMenu(targ,url,selObj,restore) { //v3.0
  eval(targ+".location='"+url+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}


function openCentered(strUrl, strName, strParams) {
	// opens popup window centered on screen
	var arrParams = strParams.split(",");
	var strCenteredParams = "";
	var intLeft, intTop, intWidth, intHeight;
	
	for (var i=0; i<arrParams.length; i++) {
		if (arrParams[i].indexOf("width") > -1) {
			intWidth = arrParams[i].substr(6);
			intLeft = parseInt((screen.availWidth-intWidth)/2);
		} else if (arrParams[i].indexOf("height") > -1) {
			intHeight = arrParams[i].substr(7);
			intTop = parseInt((screen.availHeight-intHeight)/2);
		} else if (arrParams[i].indexOf("left") > -1) {
		} else if (arrParams[i].indexOf("top") > -1) {			
		} else {
			strCenteredParams += arrParams[i] + ",";
		}
	}
	strCenteredParams += "width="+intWidth+",height="+intHeight+",left="+intLeft+",top="+intTop;
	window.open(strUrl, strName, strCenteredParams);
}