// JavaScript Document

var myWindow;

function changePic(object, picture){
  object.src = picture + ".gif";
}

function showPics(ID){

  if(myWindow != null){
    myWindow.close();
  }

  myWindow = window.open("galerie.php?ID=" + ID, "xxx", "left=10, top=10, width=550, height=310, toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=no, copyhistory=no");
  myWindow.focus();
}

function whiteBorder(pic){
  pic.style.border = "solid black 1px";
}

function grayBorder(pic){
  pic.style.border = "solid #888784 1px";
}


function surf(){
    
  var timeout = (Math.round(8*Math.random()) + Math.round(8*Math.random()) + 2)*1000;

  var finalAdress = '';
  var mainAdress = 'http://www.elektronikalevne.cz/default.aspx';
  
  contentArray = new Array(1,2,9);
  productArray = new Array(792,617,608,612,445,529,576,574,501,297,459,547,600);
  cathegoryArray = new Array(116,111,19,110,109,98,115);
  
  var surfType = Math.round(10*Math.random());
  
  if(surfType < 3){
    subsurfType = getMyRandom(2);
    finalAdress = mainAdress + '?content=' + contentArray[subsurfType];
  }
  if(surfType >= 4 && surfType < 9){
    subsurfType = getMyRandom(12);
    finalAdress = mainAdress + '?pi=' + productArray[subsurfType];
  }
  if(surfType >= 10){
    subsurfType = getMyRandom(6);
    finalAdress = mainAdress + '?g=' + cathegoryArray[subsurfType];
  }

  frames['myframe'].location.href = finalAdress;
  //setTimeout("surf()", timeout);
}
    
function getMyRandom(maxValue){
  var number = 1000000;
  while(number > maxValue){
    number = Math.round(20*Math.random());
  }
  return number;
}