if (document.images) {
             pic1on=new Image();
             pic1on.src="../images/menu/pic1on.gif";
             pic2on=new Image();
             pic2on.src="../images/menu/pic2on.gif";
             pic3on=new Image();
             pic3on.src="../images/menu/pic3on.gif";
             pic4on=new Image();
             pic4on.src="../images/menu/pic4on.gif";
             pic5on=new Image();
             pic5on.src="../images/menu/pic5on.gif";
             pic6on=new Image();
             pic6on.src="../images/menu/pic6on.gif";
             pic1off=new Image();
             pic1off.src="../images/menu/pic1off.gif";
             pic2off=new Image();
             pic2off.src="../images/menu/pic2off.gif";
             pic3off=new Image();
             pic3off.src="../images/menu/pic3off.gif";
             pic4off=new Image();
             pic4off.src="../images/menu/pic4off.gif";
             pic5off=new Image();
             pic5off.src="../images/menu/pic5off.gif";
             pic6off=new Image();
             pic6off.src="../images/menu/pic6off.gif";
			 
          }             

     function img_act(imgName) {
             if (document.images) {
             imgOn=eval(imgName + "on.src");
             document [imgName].src=imgOn;
             }
     }

     function img_inact(imgName) {
             if (document.images) {
             imgOff=eval(imgName + "off.src");
             document [imgName].src=imgOff;
             }
     }