function showimage(name){
//alert(screen.height);
 var dTop = (screen.height);
 var dLeft = (screen.width / 5);
 $('showimage').style.top = dTop+'px';
 $('showimage').style.left = dLeft+'px';
 $('showimage').style.width  = 'auto';
 $('showimage').style.height = 'auto';
 Effect.toggle('showimage','appear');	 
	var url = 'index.php';
	var pars = 'mode=showimage&image='+name;
 	var myAjax = new Ajax.Request(
	url,
	{
		method: 'get',
		parameters: pars,
		onComplete:retShowDoc
	}); 
}
function retShowDoc(originalRequest){
   	var response = originalRequest.responseText;
    $('showimage').innerHTML =response;
}