/// <summary>
///Adding Handler for Page load
/// </summary>
/// <remarks>Added BY Manju</remarks>  
    
Sys.Application.add_load(page_load);
function page_load()
{
    var btnprev = $get(ctrlPrefix+"btnPrev"); 
    var btnnext = $get(ctrlPrefix+"btnNext");
    if(imgArr!= undefined)
    {
        if(imgArr.length<=1)
        {    
        if(btnnext!=null)
            btnnext.style.visibility="hidden";
            if(btnprev!=null)  
            btnprev.style.visibility="hidden";
        }    
        else
        {
        if(btnprev!=null)
            btnprev.disabled=true;
        }
    }
}

/// <summary>
/// function to move previous or next in the Product page
/// </summary>
/// <remarks>Added By </remarks>  

function showImage(actiontype)
{    
    var btnnext = $get(ctrlPrefix+"btnNext");
    var btnprev = $get(ctrlPrefix+"btnPrev");
    var img = $get(ctrlPrefix+"MainImage");
    if (actiontype==1)
     imgCnt--;
     else
      imgCnt++;
    
        
    if (imgCnt>=imgArr.length - 1 )
    {
       btnnext.disabled=true;
       imgCnt = imgArr.length- 1;
    }
    else
       btnnext.disabled = false;
     
    if ( imgCnt <= 0) 
    {
        btnprev.disabled = true;
        imgCnt = 0;
    }
    else
       btnprev.disabled = false;
   
 if(imgArr!=null)
 {
  if(imgArr.length>1)
  {
      img.alt=imgArr[imgCnt].title;
      img.src=imgArr[imgCnt].imagepath;
      img.style.height=imgArr[imgCnt].height;
      img.style.width=imgArr[imgCnt].width;
  }
 }
}