/* Greybox Redux Scrollable
 * Required: http://jquery.com/
 * Required http://brandonaaron.net/docs/dimensions/
 * Written by: Richard Atkinson
 * Modified: to include offset for vertical scrolling using jquery.dimensions.
 * Based on: Greybox Redux by John Resig
 * Which is based on code by: 4mir Salihefendic (http://amix.dk)
 * License: LGPL (read more in LGPL.txt)
 */

var GB_DONE = false;
var GB_HEIGHT = 400;
var GB_WIDTH = 400;

function GB_show(caption, url, height, width) {
  GB_HEIGHT = height || 400;
  GB_WIDTH = width || 400;
  if(!GB_DONE) {
    $(document.body)
      .append("<div id='GB_overlay'></div><div id='GB_window'><div id='GB_caption'></div>"
        + "<img src='img/close.gif' alt='Close window'/></div>");
    $("#GB_window img").click(GB_hide);
    $("#GB_overlay").click(GB_hide);
    $(window).resize(GB_position);
    GB_DONE = true;
  }

  $("#GB_frame").remove();
  $("#GB_window").append("<iframe id='GB_frame' src='"+url+"'></iframe>");

  $("#GB_caption").html(caption);
  $("#GB_overlay").show();
  GB_position();
  
  $("#GB_window").show();
}

function GB_hide() {
  $("#GB_window,#GB_overlay").hide();
}

function GB_position() {
  var w = $('html').innerWidth(); 
  $("#GB_window").css({
    width: GB_WIDTH+"px",
    height:GB_HEIGHT+"px",
    left: ((w - GB_WIDTH)/2)+"px",
    top: ( $('html').scrollTop() + 50) + 'px'
  });
         
  $('#GB_overlay').css('top',  $('html').scrollTop() + 'px');
  $("#GB_frame").css("height",GB_HEIGHT - 32 +"px");
}