function initShow()
{
	var alt=$$('.alternate');
	for(var i=0;i<alt.length;i++)
	{
		Event.observe(alt[i],'mouseover',showImage2);
	}
	
	
}

function showImage1()
{
	var elem=this;
	if(elem.readAttribute('image1')&&elem.readAttribute('image2')&&elem.readAttribute('pos1')&&elem.readAttribute('pos2'))
	{
		var pos1=elem.readAttribute('pos1');
		var pos2=elem.readAttribute('pos2');
		elem.writeAttribute('src',elem.readAttribute('image1'));
		var style=elem.readAttribute('style');
			style=style.replace(/ /g,'');
			style=style.replace(pos2,pos1);
		elem.writeAttribute('style',style);
		
		Event.stopObserving(elem,'mouseout',showImage1);
	}
	return true
}

function showImage2()
{
	var elem=this;
	if(elem.readAttribute('image1')&&elem.readAttribute('image2')&&elem.readAttribute('pos1')&&elem.readAttribute('pos2'))
	{
		var pos1=elem.readAttribute('pos1');
		var pos2=elem.readAttribute('pos2');
		elem.writeAttribute('src',elem.readAttribute('image2'));
		var style=elem.readAttribute('style');
			style=style.replace(/ /g,'');
			style=style.replace(pos1,pos2);
		elem.writeAttribute('style',style);
		
		Event.observe(elem,'load',function (){return imgLoad(elem)});
	}
	return true
}

function imgLoad(img)
{
	Event.observe(img,'mouseout',showImage1);
}



Event.observe(window,'load',initShow);