//***********************************************
//	Standards Compliant Rollover Script
//	Author : Daniel Nolan
//	http://www.bleedingego.co.uk/webdev.php
//	
//	To begin with you need to load the javascript into a page in the head section of your page.
//	Next you will need to add the attribute class="imgover" to any image in your document that 
//	requires a mouseover effect to be trigger.
//	<img src="sample.jpg" alt="Some Image" class="imgover">
//	Finally, for any image in your document you will need to create a rollover state for it, the 
//	only requirements for this image is that it is named exactly the same as the original image, but 
//	it needs _o on the end of the name. The image should also be in the same directory as the original 
//	and should be of the same type. So for example you would have sample.jpg and sample_o.jpg files 
//	in the same directory.
//************************************************

function initRollovers() {
	if (!document.getElementById) return
	
	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {		
		if (aImages[i].className == 'imgover') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_o'+ftype);

			aImages[i].setAttribute('hsrc', hsrc);
			
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
			
			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}	
			
			aImages[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_o'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
}

function swapzitat(zitatid) {
	document.getElementById(zitatid).style.display = 'block';
}