var Brs = new Browser()

function Browser()
{
	this.VER	= navigator.appVersion;
	this.AGENT	= navigator.userAgent.replace(/[\/]/g,' ');
	this.DOM	= document.getElementById ? true:false;

	this.OP5	= this.AGENT.indexOf("Opera 5")>-1							?true:false;
	this.OP6	= this.AGENT.indexOf("Opera 6")>-1							?true:false;
	this.OP7	= this.AGENT.indexOf("Opera 7")>-1							?true:false;
	this.OP8	= this.AGENT.indexOf("Opera 8")>-1							?true:false;
	this.OP		= (this.OP5 || this.OP6 || this.OP7 || this.OP8);

	this.IE4	= (document.all && !this.DOM && !this.OP)					?true:false;
	this.IE5	= (this.VER.indexOf("MSIE 5")>-1 && this.DOM && !this.OP)	?true:false; 
	this.IE6	= (this.VER.indexOf("MSIE 6")>-1 && this.DOM && !this.OP)	?true:false;
	this.IE7	= (this.VER.indexOf("MSIE 7")>-1 && this.DOM && !this.OP)	?true:false;
	this.IE		= (this.IE4 || this.IE5 || this.IE6 || this.IE7);

	this.Gecko  = this.AGENT.lastIndexOf('Gecko')>0;
	this.NS4	= (document.layers && !this.DOM)							?true:false;
	this.NS7	= (this.DOM && parseInt(this.VER) >= 5 && this.AGENT.lastIndexOf('Netscape')<this.AGENT.lastIndexOf('7'))?true:false;
	this.NS6	= (this.DOM && parseInt(this.VER) >= 5 && !this.NS7)		?true:false;
	this.NS		= (this.NS4 || this.NS6 || this.NS7 || this.Gecko);

	return this;
}
 
 function AddToFavorites(url,title){
	if (window.sidebar){
		window.sidebar.addPanel(title, url,'');
	}else if (Brs.IE){
		window.external.AddFavorite(url, title);
	}else{
	 	alert('Váš prohlížeč nepodporuje přidávání adresy mezi oblíbené. Zkuste přidat stránku do oblíbených stiskem CTRL+D.');
	}
}