function otvor_okno(theURL) { 
  mx = Math.round((screen.width-355)/2);
  my = Math.round((screen.height-510)/2);
  var myWin2=window.open(theURL,"tr","status=yes,toolbar=no,directories=no,scrollbars=no,location=no,resizable=yes,menubar=no,left="+mx+",top="+my+",width=345,height=500") . focus();
}

function otvor_okno_wide(theURL) { 
  mx = Math.round((screen.width-910)/2);
  my = Math.round((screen.height-260)/2);
  var myWin2=window.open(theURL,"tr","status=yes,toolbar=no,directories=no,scrollbars=yes,location=no,resizable=yes,menubar=no,left="+mx+",top="+my+",width=900,height=250") . focus();

}

function otvor_okno_big(theURL) { 
  mx = Math.round((screen.width-910)/2);
  my = Math.round((screen.height-510)/2);
  var myWin2=window.open(theURL,"tr","status=yes,toolbar=no,directories=no,scrollbars=yes,location=no,resizable=yes,menubar=no,left="+mx+",top="+my+",width=900,height=500") . focus();
}







function hide(object) {
    if (document.getElementById && document.getElementById(object) != null)  //ns6+ or ie5+
         node = document.getElementById(object).style.visibility='hidden';
    else if (document.layers && document.layers[object] != null)             //ns4
         document.layers[object].visibility = 'hidden';
    else if (document.all)						     //ie4+
         document.all[object].style.visibility = 'hidden';
}

function show(object) {
    if (document.getElementById && document.getElementById(object) != null)
         node = document.getElementById(object).style.visibility='visible';
    else if (document.layers && document.layers[object] != null)
        document.layers[object].visibility = 'visible';
    else if (document.all)
        document.all[object].style.visibility = 'visible';
}

function hideidt() {
    hide("idtnull"); hide("idtnotnull"); 
} 

function showidt(idt) {
    if (idt == 0) 
	show("idtnull");
    else
	show("idtnotnull");
} 



var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{
			string: navigator.userAgent,
			subString: "Chrome",
			identity: "Chrome"
		},
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari",
			versionSearch: "Version"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();