function r_degistir (isim,y_img){
	var yeni_img;
	yeni_img="images/"+ isim +y_img;
	document.images[isim].src=yeni_img;
	
	yukle0=new Image(1, 1);
	yukle0.src="menu_01k.gif";
	yukle1=new Image(1, 1);
	yukle1.src="menu_02k.gif";
	yukle2=new Image(1, 1);
	yukle2.src="menu_03k.gif";
	yukle3=new Image(1, 1);
	yukle3.src="menu_04k.gif";
	yukle4=new Image(1, 1);
	yukle4.src="menu_05k.gif";
}