var index=0;
var isRunning=false;

function nextPicture()
{
   if (index+1 >= max)
   {
	return;
   }
   ++index;
   var fn="photo"+index+".jpg";
   var image=document.getElementById("main_image");
   image.setAttribute("src",fn);
}
function previousPicture()
{
   if (index-1 <0)
   {
	return;
   }
   --index;
   var fn="photo"+index+".jpg";
   var image=document.getElementById("main_image");
   image.setAttribute("src",fn);
}
function initializePictures()
{
   //index = 0;
   index = top.cp-1;
   nextPicture();
}
function startSlides()
{
   isRunning=true;
   advance();
}
function stopSlides()
{
   isRunning=false;
}
function advance()
{
    if (!isRunning)
    {
        return;
    }
   ++index;
   if (index>= max)
   {
        isRunning=false;
        return;
   }
   var fn="photo"+index+".jpg";
   var image=document.getElementById("main_image");
   image.setAttribute("src",fn);
   setTimeout('advance()',3000);
}
function addRow(t,p,c)
{
    var row = document.createElement("tr");

    for(var i=0; i<c; ++i)
    {   
        col = document.createElement("td");
        col.innerHTML = "<img src=\"thumbnail"+p+".jpg\">";
        row.appendChild(col);
	p++;
    }
    t.appendChild(row);
}