/* 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_showCenter(source, height, width) {
  source.blur();
  GB_HEIGHT = 200;
  GB_WIDTH = 770;
  if(!GB_DONE) {
    $(document.body)
      .append("<div id='GB_overlay'></div><div id='GB_window' style='overflow: hidden;'><div id='GB_caption'></div>"
        + "</div>");//<img src='close.gif' alt='Close window'/>
    //$("#GB_window img").click(GB_hide);
    //$("#GB_overlay").click(GB_hide);
    $(window).resize(GB_position);
    $(window).scroll(GB_position);
    GB_DONE = true;
  }
  else
  {
	$('#GB_window').css('overflow', 'hidden');
  }

  $("#loadingGrey").remove();
  $("#GB_window").append("<table id='loadingGrey' width='100%' height='100%'><tr><td align='center' height='90%'><img src='" + BaseUrl + "includes/jQuery/GreyboxRedux/loadingGrey.gif' width='200' height='150' /></td></tr><tr><td height='10%'>&nbsp;</td></tr></table>");

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

  GB_position();

  if(GB_ANIMATION)
    $("#GB_window").slideDown("slow");
  else
    $("#GB_window").show();

  return false;
}

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

function GB_newCaption(txt) {
	if (txt == null) {
		txt = '';
	}
	$("#GB_caption").html(txt);
}

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 = GB_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");
  $("#GB_frame").css("width",GB_WIDTH + "px");
}

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