function mench(fil, obj) {
    var imgsrc = "img/"
    imgsrc += fil + ".gif";
    obj.src = imgsrc;
}

var imgsrc = new Array();
imgsrc[0] = "./img/m_codelame_b.gif";
imgsrc[1] = "./img/m_kontakt_b.gif";
imgsrc[2] = "./img/m_ofirme_b.gif";
imgsrc[3] = "./img/m_reference_b.gif";

var img = new Array();
var i;
for (i = 0; i< imgsrc.length; i++) {
  img[i] = new Image();
  img[i].src = imgsrc[i];
}

  function bar(url){
    wasOpen  = false;
    win = window.open(url);
    return (typeof(win)=='object') ? true : false;
  }

  function openinnew(picfile){
    window.open("image.php?fil=" + picfile, "Náhled", "width=400, height=300, top=150, left=200, screenX=150, screenY=200, location=0, menubar=0, resizable=0, scrollbars=0, toolbar=0");
  }