/* 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;

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='"+base_url_without_index+"assets/styles/greybox/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();

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

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;
  $("#GB_window").css({width:GB_WIDTH+"px",height:GB_HEIGHT+"px",
    left: ((w - GB_WIDTH)/2)+"px" });
  $("#GB_frame").css("height",GB_HEIGHT - 32 +"px");
  
  var gb_overlay = document.getElementById("GB_overlay");
  gb_overlay.style.height = sizes() + 'px';
  
  var gb_win = document.getElementById("GB_window");
  gb_win.style.top = 30 + scrollOffset() + 'px';
}

function sizes(type){
	if( window.innerHeight && window.scrollMaxY ){ // Firefox 
		pageWidth = window.innerWidth + window.scrollMaxX;
		pageHeight = window.innerHeight + window.scrollMaxY;
	}
	else {
		if( document.body.scrollHeight > document.body.offsetHeight ){ // all but Explorer Mac
			pageWidth = document.body.scrollWidth;
			pageHeight = document.body.scrollHeight;
		} else { // works in Explorer 6 Strict, Mozilla (not FF) and Safari 
			pageWidth = document.body.offsetWidth + document.body.offsetLeft; 
		    pageHeight = document.body.offsetHeight + document.body.offsetTop; 
		}
	}
	
	if(type==0)
		return pageWidth;
	else
		return pageHeight;
}

function scrollOffset(){
	var x,y;
	
	if (self.pageYOffset) // all except Explorer
	{
		x = self.pageXOffset;
		y = self.pageYOffset;
	}
	else if (document.documentElement && document.documentElement.scrollTop)
		// Explorer 6 Strict
	{
		x = document.documentElement.scrollLeft;
		y = document.documentElement.scrollTop;
	}
	else if (document.body){ // all other Explorers
		x = document.body.scrollLeft;
		y = document.body.scrollTop;
	}	
	
	return y;
}