var ROOT_DIR;

function scan_page()	{preload(document.images.length)}
function preload(num)	{for (i = 0; i <= num-1; i++) load_img(document.images[i].name)}
function load_img(name)	{this.over=new Image(); this.over.src=ROOT_DIR+'images/button/'+name+'_o.png';}
function img(imgName, onOff, layer) {
	if (document.images) {
		if (onOff == 1)	{
			if (layer ==1) document.getElementById(imgName+'T').style.visibility = "visible";
			document[imgName].src = ROOT_DIR+'images/button/'+imgName+'_o.png';
		}
		if (onOff == 0)	{
			if (layer ==1) document.getElementById(imgName+'T').style.visibility = "hidden";
			document[imgName].src = ROOT_DIR+'images/button/'+imgName+'.png';	
		}	
	}
}

function leere() {
	document.suche.sstr.value="";
}