/* Greybox Redux
 * Required: http://jquery.com/
 * Written by: John Resig
 * 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;
var GB_ANIMATION = false;

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='" + BaseUrl + "js/GreyboxRedux/close2.gif' alt=''/></div>");//<img src='close.gif' alt='Close window'/>
    $("#GB_window img").click(GB_hide);
    $("#GB_overlay").click(GB_hide);
    $(window).resize(GB_position);
    $(window).scroll(GB_position);
    GB_DONE = true;
  }

  $("#GB_frame").remove();
  $("#GB_window").append("<iframe id='GB_frame' src='"+url+"' frameborder='0'></iframe>");

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

  $("#GB_window").show();

  return false;
}

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

function GB_position() {
  var de = document.documentElement;
  var w = self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;
  var h = self.innerHeight || (de&&de.clientHeight) || document.body.clientHeight;

  var overlayHeight = $("#GB_overlay").height();
  var htmlHeight = document.body.parentNode.scrollHeight
  var scrollTop = getScrollTop();

  if (overlayHeight < htmlHeight)
    $("#GB_overlay").css("height", document.body.parentNode.scrollHeight+"px");

  $("#GB_window").css({width:GB_WIDTH+"px",height:GB_HEIGHT+"px",
    left: ((w - GB_WIDTH)/2)+"px", top: (((h - GB_HEIGHT)/2)+scrollTop)+"px" });
  $("#GB_frame").css("height",GB_HEIGHT - 20 +"px");
}

function getScrollTop() {
	var t;
	if(document.documentElement&&document.documentElement.scrollTop) {
		t=document.documentElement.scrollTop;
	} else {
		if(document.body) {
			t=document.body.scrollTop;
		}
	}
	return t;
}