if (document.images) {
 img5_on =new Image();  img5_on.src ="kuvat/navi1_act.jpg"; 
 img5_off=new Image();  img5_off.src="kuvat/navi1.jpg"; 

 img1_on =new Image(); img1_on.src ="kuvat/navi2_act.jpg"; 
 img1_off=new Image(); img1_off.src="kuvat/navi2.jpg"; 

 img2_on =new Image(); img2_on.src ="kuvat/navi3_act.jpg"; 
 img2_off=new Image(); img2_off.src="kuvat/navi3.jpg"; 

 img3_on =new Image(); img3_on.src ="kuvat/navi4_act.jpg"; 
 img3_off=new Image(); img3_off.src="kuvat/navi4.jpg"; 
}

function movr(k) {
 if (document.images) 
  eval('document.img'+k+'.src=img'+k+'_on.src');
}

function mout(k) {
 if (document.images) 
  eval('document.img'+k+'.src=img'+k+'_off.src');
}

function handleOver() {
 if (document.images) 
  document.imgName.src=img_on.src;
}

function handleOut() {
 if (document.images) 
  document.imgName.src=img_off.src;
}