//Ρκπθος ΜΕΝή       

        var pic1=new Image(); pic1.src="button_gr_.png"; 
        var pic11=new Image(); pic11.src="button_gr.png";
		
         function rollover(ent, pic1, pic11) 
         { 
            if (ent.src==pic1.src) {ent.src=pic11.src} 
            else {ent.src=pic1.src} 
         }
		 
<!-- 

function newImage(arg) { 
   if (document.images) { 
      rslt = new Image(); 
      rslt.src = arg; 
      return rslt; 
   } 
} 

function changeImages() { 
   if (document.images && (preloadFlag == true)) { 
      for (var i=0; i<changeImages.arguments.length; i+=2) { 
         document[changeImages.arguments[i]].src = changeImages.arguments[i+1]; 
      } 
   } 
} 

var preloadFlag = false; 
function preloadImages() { 
   if (document.images) { 
      img1.jpg = newImage("http://www.trxbg.net/images/menu/gallery_.gif"); 
      preloadFlag = true; 
   } 
}