// 마우스를 올렸을때 변하는 이미지 
 	img1on = new Image( );
 	img1on.src = "images/lm1-over.gif";
 
	img1off = new Image( );
    img1off.src = "images/lm1.gif";

 	img2on = new Image( );
 	img2on.src = "images/lm2-over.gif";
 
	img2off = new Image( );
    img2off.src = "images/lm2.gif";

 	img3on = new Image( );
 	img3on.src = "images/lm3-over.gif";
 
	img3off = new Image( );
    img3off.src = "images/lm3.gif";

 	img4on = new Image( );
 	img4on.src = "images/lm4-over.gif";
 
	img4off = new Image( );
    img4off.src = "images/lm4.gif";


// 마우스를 올리면 다른 이미지를 작동시킴
 function img_act(imgName) {
   document [imgName].src = eval(imgName + "on.src");
 }

  // 원상태로 복구
 function img_inact(imgName) {
   document [imgName].src = eval(imgName + "off.src");
 }