var isDOM = (document.getElementById ? true : false);
var isIE4 = ((document.all && !isDOM) ? true : false);
var isNS4 = (document.layers ? true : false);

function getRef(id) {
  if (isDOM) return document.getElementById(id);
  if (isIE4) return document.all[id];
  if (isNS4) return document.layers[id];
  };
function getSty(id) {   return (isNS4 ? getRef(id) : getRef(id).style); };
function menuGo(text){
  if((text.substr(0,4).toLowerCase())=="http"){
  	newWinRes(text);
  }else{ window.location.replace(text); };
}
function newWinRes(newUrl) { 

if (!window.open(newUrl,"",'toolbar=1,location=1,directories=1,status=1,menubar=1,scrollbars=1,resizable=1'))
  window.location.replace(newUrl);
};

pics = new Array();
var pocet = 0;
function preload(prvni, druhy) {
  pics[pocet] = new Array(2);
  pics[pocet][0] = new Image();
  pics[pocet][0].src = prvni;
  pics[pocet][1] = new Image();
  pics[pocet][1].src = druhy;
  pocet++;
}

function bookmark()
{
 window.external.AddFavorite("http://www.Laviny.cz","Laviny.cz - Laviny informací o horách");
}

function setHomePage(page)
{
 page.style.behavior='url(#default#homepage)';
 page.setHomePage('http://www.laviny.cz');
}

function sendLink(odkaz)
{
 odkaz_string= new String(odkaz);

 odkaz_array=odkaz_string.split('');
 for (var i=0;i<odkaz_string.length;i++)
   {
    if(odkaz_array[i]=="&")
      {//alert(odkaz_array[i]);
       odkaz_array[i]='%26';
       //alert(odkaz_array[i]);
      }
   }
 odkaz_string=odkaz_array.join('');
 document.location = "mailto:?subject=Odkaz%20na%20laviny.cz&body=Odkaz%20na%20server%20Laviny.cz%20:%0D%0A"+odkaz_string+"%0D%0ALaviny.cz%20-%20Laviny%20informací%20o%20horách";
}

function printPage()
{
  window.print();
}

function GalWin(cesta,x,y)
{
var WindowName;
var l = (screen.availWidth-10 - x) / 2;
var t = (screen.availHeight-20 - y) / 2;
WindowName=window.open('','_blank',"toolbar=0,location=0,scrollbars=0,width="+x+",height="+y+",resizable=0,left="+l+",top="+t);
WindowName.document.open();
WindowName.document.write('<HTML><HEAD><TITLE>Laviny.cz: Galerie</TITLE></HEAD>');
WindowName.document.write('<BODY TOPMARGIN=0 LEFTMARGIN=0 MARGINWIDTH=0 MARGINHEIGHT=0><A HREF="javascript:window.close();" TITLE="Klikni pro uzavreni okna."><IMG SRC="',cesta,'" BORDER="0"></A>');
WindowName.document.write('</BODY></HTML>');
WindowName.document.close();
}
//-------------------------------------------

preload("./img/pocasi.gif","./img/pocasi_on.gif");
preload("./img/galerie.gif","./img/galerie_on.gif");
preload("./img/cestovani.gif","./img/cestovani_on.gif");
preload("./img/informace.gif","./img/informace_on.gif");
preload("./img/bazar.gif","./img/bazar_on.gif");
preload("./img/forum.gif","./img/forum_on.gif");
preload("./img/partneri.gif","./img/partneri_on.gif");
preload("./img/odkazy.gif","./img/odkazy_on.gif");
preload("./img/spolujizda.gif","./img/spolujizda_on.gif");


function targetBlank(url)
{
  var width = 800;
  var height = 600;
  var left = Math.floor( (window.screen.availWidth - 10 - width) / 2);
  var top = Math.floor( (window.screen.availHeight - 20 - height) / 2);
  var href = (typeof(url) == 'string') ? url : url.href;

	if (href != "")
	{
    var winParms = "screenX=" + left + ",screenY=" + top + ",top=" + top + ",left=" + left + ",height=" + height + ",width=" + width;
		return !window.open(href,'_blank', 'menubar=yes,toolbar=yes,location=yes,directories=no,fullscreen=no,titlebar=yes,hotkeys=yes,alwayslowered=no,status=yes,scrollbars=yes,resizable=yes,dependent=no,channelmode=NO,alwaysraised=yes,zlock=yes,'+winParms);
	}
}
