/* 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_initialize(){
	if (!GB_DONE) {
		$(document.body).append("<div id='GB_overlay'></div><div id='GB_window'><div id='GB_caption'></div>" +
		"<img src='greybox/zapri.png' alt='Zapri okno' style='margin-top:3px;'/></div>");
		$("#GB_window img").click(GB_hide);
		$("#GB_overlay").click(GB_hide);
		$(window).resize(GB_position);
		$(window).scroll(GB_position);
		$(window).scroll(GB_scroll_overlay);
		GB_DONE = true;
		GB_position();
		GB_hide();
	}
}

function GB_show(caption, url, height, width){
	GB_HEIGHT = height || 400;
	GB_WIDTH = width || 400;
	GB_initialize();
	
	$("#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_scroll_overlay(){
	$("#GB_overlay").css({
		top: $(window).scrollTop()
	});
}

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;
	$("#GB_window").css({
		width: ($(window).width() < GB_WIDTH ? $(window).width():GB_WIDTH)  + "px",
		height: ($(window).height() < GB_HEIGHT ? ($(window).height()-60):GB_HEIGHT) + "px",
		left: ((w - ($(window).width() < GB_WIDTH ? $(window).width():GB_WIDTH)) / 2) + "px",
		top: $(window).scrollTop() + 20 + "px"
	});
	$("#GB_frame").css("height", ($(window).height() < GB_HEIGHT ? ($(window).height()-60):GB_HEIGHT) - 42 + "px");
}