var preimg = new Array(2);
for (i=1;i<3;i++){
    preimg[i] = new Image;
    preimg[i].src = pass+"img/headmenu"+(i)+"_ro.gif";
}

var premenuimg = new Array(7);
for (i=1;i<8;i++){
    premenuimg[i] = new Image;
    premenuimg[i].src = pass+"img/menu"+(i)+"_ro.gif";
}

var premenuimg = new Array(7);
for (i=1;i<8;i++){
    premenuimg[i] = new Image;
    premenuimg[i].src = pass+"img/menu"+(i)+"_ro.gif";
}

function chimg(over){
img1 = new Image;
img1.src = pass +"img/jp_"+over+"_ro.gif";
document.images[over].src = img1.src;
return true;
}

function bkimg(out){
img2 = new Image;
img2.src = pass +"img/jp_"+out+".gif";
if(out!=mymenu){
document.images[out].src = img2.src;
}
return true;
}

function mysetmenu(){
  if(mymenu){
    chimg(mymenu);
  }
}


function chimg_project(over){
img1 = new Image;
img1.src = pass +"project/img/"+over+"_ro.gif";
document.images[over].src = img1.src;
return true;
}

function bkimg_project(out){
img2 = new Image;
img2.src = pass +"project/img/"+out+".gif";
if(out!=mymenu){
document.images[out].src = img2.src;
}
return true;
}

function chimg_column(over){
img1 = new Image;
img1.src = pass +"column/img/"+over+"_ro.gif";
document.images[over].src = img1.src;
return true;
}

function bkimg_column(out){
img2 = new Image;
img2.src = pass +"column/img/"+out+".gif";
if(out!=mymenu){
document.images[out].src = img2.src;
}
return true;
}