// This is the implementation of SimpleSwap
// by Jehiah Czebotar
// Version 1.1 - June 10, 2005
// Distributed under Creative Commons
//
// Include this script on your page
// then make image rollovers simple like:
// <img src="/images/ss_img.gif" oversrc="/images/ss_img_over.gif">
//
// http://jehiah.com/archive/simple-swap
//


function SimpleSwap(el,which){
  el.src=el.getAttribute(which || "origsrc");
}

function SimpleSwapSetup(){
  var x = document.getElementsByTagName("img");
  for (var i=0;i<x.length;i++){
    var oversrc = x[i].getAttribute("oversrc");
    if (!oversrc) continue;

    // preload image
    // comment the next two lines to disable image pre-loading
    x[i].oversrc_img = new Image();
    x[i].oversrc_img.src=oversrc;
    // set event handlers
    x[i].onmouseover = new Function("SimpleSwap(this,'oversrc');");
    x[i].onmouseout = new Function("SimpleSwap(this);");
    // save original src
    x[i].setAttribute("origsrc",x[i].src);
  }
}

var PreSimpleSwapOnload =(window.onload)? window.onload : function(){};
window.onload = function(){PreSimpleSwapOnload(); SimpleSwapSetup();}



function viewPic(img)
{
    picfile = new Image();
    picfile.src =(img);
    fileCheck(img);
}

function fileCheck(img)
{
    if( (picfile.width!=0) && (picfile.height!=0) )
    {
        makeWindow(img);
    }
    else
    {
        funzione="fileCheck('"+img+"')";
        intervallo=setTimeout(funzione,50);
    }
}

function makeWindow(img)
{
    ht = picfile.height + 20;
    wd = picfile.width + 20;

    var args= "height=" + ht + ",innerHeight=" + ht;
    args += ",width=" + wd + ",innerWidth=" + wd;
    if (window.screen)
    {
        var avht = screen.availHeight;
        var avwd = screen.availWidth;
        var xcen = (avwd - wd) / 2;
        var ycen = (avht - ht) / 2;
        args += ",left=" + xcen + ",screenX=" + xcen;
        args += ",top=" + ycen + ",screenY=" + ycen + ",resizable=yes";
    }
    return window.open(img, '', args);
}