var imgTimeOut;
var div;

function createImage(){
	div = document.createElement('div');
	div.id = 'divImage';
	div.style.display = 'none'
	document.body.appendChild(div);
}

function hideImage(){
	window.clearTimeout(imgTimeOut);
	if(div = document.getElementById('divImage')){
		div.style.display='none';
	}
}

function popupImage(image){
	var imgUrl = 'http://www.sf-leihbuch.de/covers/' + image;
	div = document.getElementById('divImage')
	div.style.position = 'absolute';
	div.style.backgroundColor = 'white';
	div.style.border = '1px outset';
	if(div.hasChildNodes()){
		div.removeChild(div.childNodes[0]);}
	img = document.createElement('img');
	img.style.padding='1px';
	img.src = imgUrl;
	img.height = Math.round(screen.height/2);
	div.appendChild(img);
	div.style.display = 'block'
}

function followImage(event){
	if(div = document.getElementById('divImage')){
		if(document.all){
		    div.style.left = event.clientX + document.documentElement.scrollLeft + 8 + 'px';
		    div.style.top = event.clientY + document.documentElement.scrollTop + 8 + 'px';
		}else{
		    div.style.left = event.pageX + 8 +'px';
		    div.style.top = event.pageY + 8 +'px';
	    }
	}
	
}