function openBook(img_path, img_width, img_height)
{
     win = window.open(img_path,"img_win","menubar=no,toolbar=no,status=no,fullscreen=no,scrollbars=yes,resizable=no,width=" + img_width + ",height=" + img_height);

     //win.moveTo(200,200);

}

function showHide(row_id)
{
     var current_row = "row" + row_id;
     var current_img = "img" + row_id;
     
     var v = document.getElementById(current_row).style.visibility;
     
     if(v == "visible")
     {
           document.getElementById(current_row).style.display = "none";
           document.getElementById(current_row).style.visibility = "hidden";
           document.images[current_img].src = "images/plus.gif";
           document.images[current_img].alt = "For Visible Press Here";
     }
     else
     {
           document.getElementById(current_row).style.display = "";
           document.getElementById(current_row).style.visibility = "visible";
           document.images[current_img].src = "images/minus.gif";
           document.images[current_img].alt = "For Hide Press Here";
     }
}