<!--

var ImgArr,ImgLen;

function preload(imgname) {

 if (document.images) {

   if(!ImgArr) {

     ImgArr=new Array();

     ImgLen=0;

   }

   ImgArr[ImgLen]=new Image();

   ImgArr[ImgLen].src=imgname;

   ImgLen++;

 }   

}

function chimage(x,y){

  var s="";

  if (document.images && ImgArr) {

    with (document) {

        s=images[x].src;

        images[x].src=ImgArr[y].src

        ImgArr[y].src=s;

    }

  }

}

preload ('img/use_p_but_a.gif');

preload ('img/tech_p_but_a.gif');

preload ('img/sertif_a.gif');

preload ('img/mont_p_but_a.gif');

preload ('img/button_arm_a.gif');

preload ('img/lim_a.gif');

preload ('img/air_a.gif');

preload ('img/dil_a.gif');

preload ('img/poddel_a.gif');

//-->