var rotator;

function rotate_redtube_thumbs(obj) {
	var id = obj.id;
	set_redtube_preview_image(id, 2);
}

function set_redtube_preview_image(id, i) {
//	alert(url);
	try {
		document.getElementById(id).src = get_redtube_thumb_path(id, i);
	} catch(err) { }
	if(i < 16) {
		i++;
		rotator = setTimeout("set_redtube_preview_image('" + id + "','" + i + "')", 500);
	}
}

function stop_rotation() {
	clearTimeout(rotator);
}

function get_redtube_thumb_path(id, i) {
	id = parseInt(id);
	
	var dirid = parseInt(id.toString().slice(0, -3));
	if(!dirid) dirid = 0;
	var dir   = dirid + 10000000;
	
	id  = id + 10000000;
	i   = 1000 + parseInt(i);
	
	var path = 'http://thumbs.redtube.com/_thumbs/' 
		+ dir.toString().substr(1) + '/' 
		+ id.toString().substr(1) + '/'
		+ id.toString().substr(1) + '_'
		+ i.toString().substr(1) + '.jpg';
	
	return path; 
}



var addBookmarkObj = {
	  linkText:'+ přidat tuto stránku do záložek!',
	  addTextLink:function(parId){
	    var a=addBookmarkObj.makeLink(parId);
	    if(!a) return;
	    a.appendChild(document.createTextNode(addBookmarkObj.linkText));
	  },
	  addImageLink:function(parId,imgPath){
	    if(!imgPath || isEmpty(imgPath)) return;
	    var a=addBookmarkObj.makeLink(parId);
	    if(!a) return;
	    var img = document.createElement('img');
	    img.title = img.alt = addBookmarkObj.linkText;
	    img.src = imgPath;
	    a.appendChild(img);
	  },
	  makeLink:function(parId) {
	    if(!document.getElementById || !document.createTextNode) return null;
	    parId=((typeof(parId)=='string')&&!isEmpty(parId))
	      ?parId:'addBookmarkContainer';
	    var cont=document.getElementById(parId);
	    if(!cont) return null;
	    var a=document.createElement('a');
	    a.href=location.href;
	    if(window.opera) {
	      a.rel='sidebar'; // this makes it work in Opera 7+
	    } else {
	      // this doesn't work in Opera 7+ if the link has an onclick handler,
	      // so we only add it if the browser isn't Opera.
	      a.onclick=function() {
	        addBookmarkObj.exec(this.href,this.title);
	        return false;
	      }
	    }
	    a.title=document.title;
	    return cont.appendChild(a);
	  },
	  exec:function(url, title) {
	    // user agent sniffing is bad in general, but this is one of the times
	    // when it's really necessary
	    var ua=navigator.userAgent.toLowerCase();
	    var isKonq=(ua.indexOf('konqueror')!=-1);
	    var isSafari=(ua.indexOf('webkit')!=-1);
	    var isMac=(ua.indexOf('mac')!=-1);
	    var buttonStr=isMac?'Command/Cmd':'CTRL';

	    if(window.external && (!document.createTextNode ||
	      (typeof(window.external.AddFavorite)=='unknown'))) {
	        // IE4/Win generates an error when you
	        // execute "typeof(window.external.AddFavorite)"
	        // In IE7 the page must be from a web server, not directly from a local
	        // file system, otherwise, you will get a permission denied error.
	        window.external.AddFavorite(url, title); // IE/Win
	    } else if(isKonq) {
	      alert('Abyste přidali tento odkaz do záložek musíte stisknout CTRL + B.');
	    } else if(window.opera) {
	      void(0); // do nothing here (Opera 7+)
	    } else if(window.home || isSafari) { // Firefox, Netscape, Safari, iCab
	      alert('Abyste přidali tento odkaz do záložek musíte stisknout '+buttonStr+' + D.');
	    } else if(!window.print || isMac) { // IE5/Mac and Safari 1.0
	      alert('Abyste přidali tento odkaz do záložek musíte stisknout Command/Cmd + D.');
	    } else {
	      alert('Abyste přidali tento odkaz manuálně do záložek.');
	    }
	  }
	}

function isEmpty(s){return ((s=='')||/^\s*$/.test(s));}

function dss_addEvent(el,etype,fn) {
  if(el.addEventListener && (!window.opera || opera.version) &&
  (etype!='load')) {
    el.addEventListener(etype,fn,false);
  } else if(el.attachEvent) {
    el.attachEvent('on'+etype,fn);
  } else {
    if(typeof(fn) != "function") return;
    if(typeof(window.earlyNS4)=='undefined') {
      // to prevent this function from crashing Netscape versions before 4.02
      window.earlyNS4=((navigator.appName.toLowerCase()=='netscape')&&
      (parseFloat(navigator.appVersion)<4.02)&&document.layers);
    }
    if((typeof(el['on'+etype])=="function")&&!window.earlyNS4) {
      var tempFunc = el['on'+etype];
      el['on'+etype]=function(e){
        var a=tempFunc(e),b=fn(e);
        a=(typeof(a)=='undefined')?true:a;
        b=(typeof(b)=='undefined')?true:b;
        return (a&&b);
      }
    } else {
      el['on'+etype]=fn;
    }
  }
}

dss_addEvent(window,'load',addBookmarkObj.addTextLink);