var preloaded = [];
		var MenuNumber = 7;
		for (var i = 1; i <= MenuNumber; i++) {
			preloaded[i] = [loadImage(i + "-0.gif"), loadImage(i + "-1.gif")];
		}

		function init() {
			if (mtDropDown.isSupported()) {
				mtDropDown.initialize();

				menu1.onactivate = function() 
					{ swapImage("button1", preloaded[1][1].src)
					};
				menu1.ondeactivate = function() 
					{ swapImage("button1", preloaded[1][0].src) 
					};

				menu2.onactivate = function() 
					{ 
					swapImage("button2", preloaded[2][1].src) 
					};
				menu2.ondeactivate = function() 
					{ swapImage("button2", preloaded[2][0].src) 
					};

				menu3.onactivate = function() 
					{ swapImage("button3", preloaded[3][1].src) 
					};
				menu3.ondeactivate = function() 
					{ swapImage("button3", preloaded[3][0].src) 
					};

				menu4.onactivate = function() 
					{ swapImage("button4", preloaded[4][1].src) 
					};
				menu4.ondeactivate = function() 
					{ swapImage("button4", preloaded[4][0].src) 
					};
				
				menu5.onactivate = function() 
					{ swapImage("button5", preloaded[5][1].src) 
					};
				menu5.ondeactivate = function() 
					{ swapImage("button5", preloaded[5][0].src) 
					};
				
				menu6.onactivate = function() 
					{ swapImage("button6", preloaded[6][1].src) 
					};
				menu6.ondeactivate = function() 
					{ swapImage("button6", preloaded[6][0].src) 
					};
					
				menu7.onactivate = function() 
					{ swapImage("button7", preloaded[7][1].src) 
					};
				menu7.ondeactivate = function() 
					{ swapImage("button7", preloaded[7][0].src) 
					};			
			}
		}

		function loadImage(sFilename) {
			var img = new Image();
			img.src ="images/" + mnDosya + "/" + sFilename;
			return img;
		}

		function swapImage(imgName, sFilename) {
			var idx = imgName.replace("button", "");
			if(sFilename.indexOf("-1.gif")!=-1){
				if(idx!=1){
					var sol = "sag"+(idx-1);
					document.images[sol].src = "images/" + mnDosya + "/" + (idx-1) + "-sagover2.gif"; 
				}
				if(idx!=MenuNumber){
					var sag = "sag"+idx;
					document.images[sag].src = "images/" + mnDosya + "/" + idx + "-sagover.gif"; 
				}
			}
			else{
				if(idx!=1){
					var sol = "sag"+(idx-1);
					document.images[sol].src = "images/" + mnDosya + "/" + (idx-1) + "-sag.gif"; 
				}
				if(idx!=MenuNumber){
					var sag = "sag"+idx;
					document.images[sag].src = "images/" + mnDosya + "/" + idx + "-sag.gif"; 
				}
			}
			document.images[imgName].src = sFilename;
		}