function goBack ()
{
	
	goMegazine (-1);	
}


function goForward ()
{
	goMegazine (1);	
}

function goMegazine (direction)
{

	img = document.getElementById('megazine_img');
	var file = img.src;

	var newfile= "";
	if(file.indexOf("basis_1.jpg")==-1)
		newfile = 'catalogue/basis_1.jpg';
	else
		newfile = 'catalogue/basis_2.jpg';
		
	img.src = newfile;
}
 


function init7 ()
{


	bt = document.getElementById('fbBackButton');
	if (bt)
		addEvent(bt, "click", goBack);


	bt = document.getElementById('fbForwardButton');
	if (bt)
		addEvent(bt, "click", goForward);
		
	bt = document.getElementById('fbZoomButton');
	if (bt)
		addEvent(bt, "click", goZoom);		
		

				
//	refreshPagesInfo ();		
}




addEvent (window,"load",init7);


//


/**
* John Resig, erklärt bei quirksmode
*/
function addEvent( obj, type, fn )
{
   if (obj.addEventListener) {
      obj.addEventListener( type, fn, false );
   } else if (obj.attachEvent) {
      obj["e"+type+fn] = fn;
      obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
      obj.attachEvent( "on"+type, obj[type+fn] );
   }
}

function removeEvent( obj, type, fn )
{
   if (obj.removeEventListener) {
      obj.removeEventListener( type, fn, false );
   } else if (obj.detachEvent) {
      obj.detachEvent( "on"+type, obj[type+fn] );
      obj[type+fn] = null;
      obj["e"+type+fn] = null;
   }
}