window.addEvent('domready', function() {

	/*
	var  overlay = new overlay();
	var box = new multiBox('mb', {
		overlay: overlay
	});
	*/
	  
	var navItems = $$('#nav img');
	navItems.each(function(el, index){
		
		var src = el.getProperty('src');
		var extension = src.substring(src.lastIndexOf('.'),src.length);
		
		if(index == currNav){
	    	el.setProperty('src',src.replace(extension,'_on' + extension));
		}
		
	    el.addEvents({
		    'mouseover': function(){
		         el.setProperty('src',src.replace(extension,'_on' + extension));
		    },
		    'mouseleave': function(){
			    if(index != currNav){
		           el.setProperty('src',src);
				}
				else{
				   el.setProperty('src',src.replace(extension,'_on' + extension));  
				}
		    }
		});
		
	});
	
});