var sScrollItem = 'innercontent';
var iInterval = 20;
var iTimerId;

function setScroll(iAmount)
{
  stopScroll();

  document.getElementById(sScrollItem).scrollTop = document.getElementById(sScrollItem).scrollTop + iAmount;
  iTimerId = setTimeout("setScroll(" + iAmount + ")",iInterval);
}

function stopScroll()
{
  if (iTimerId) clearTimeout(iTimerId);
}


var gFrozenImage;

function CSFreezeImage(n)
{
  gFrozenImage = CSFindObj(n);
} // CSFreezeImage


function CSPreloadImages()
{
  var d=document;
  if(d.images)
  {
    if(!d.CSp)
      d.CSp=new Array();
    var i,j=d.CSp.length,a=CSPreloadImages.arguments;
    for(i=0; i<a.length; i++)
      if(a[i].indexOf("#")!=0)
      {
        d.CSp[j]=new Image;
        d.CSp[j++].src=a[i];
      }
  }
} // CSPreloadImages


function CSFindObj(n,d)
{
  var p,i,x;
  if(!d)
    d=document;
  if((p=n.indexOf("?"))>0&&parent.frames.length)
  {
    d=parent.frames[n.substring(p+1)].document;
    n=n.substring(0,p);
  }
  if(!(x=d[n])&&d.all)
    x=d.all[n];
  for(i=0;!x&&i<d.forms.length;i++)
    x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++)
    x=CSFindObj(n,d.layers[i].document);
  if(!x && d.getElementById)
    x=d.getElementById(n);
  return x;
} // CSFindObj


function CSSwapImage()
{
  var i,j=0,x,a=CSSwapImage.arguments;
  for(i=0;i<(a.length-2);i+=3)
  {
    if((x=CSFindObj(a[i]))!=null)
    {
      if(gFrozenImage!=x)
      {
        if(!x.oSrc)
          x.oSrc=x.src;
        x.src=a[i+2];
      }
    }
  }
}


function setImage(url)
{
  var Elem = document.getElementById('mainImage');
  Elem.style.backgroundImage = 'url('+url+')';
}