/*
	Detect the current browser-type
*/

function detectBrowser()
{
	var browser = navigator.appName;
	
//detect Netscape 4.7+
	if ((browser.indexOf("Netscape") !=-1) && parseFloat(navigator.appVersion)>=4.7)
	{
		alert("You are using Netscape 4.7+");
	}

// detect Firefox
	if(navigator.userAgent.indexOf("Firefox")!=-1)
	{
		var versionindex=navigator.userAgent.indexOf("Firefox")+8
		if (parseInt(navigator.userAgent.charAt(versionindex))>=1)
			alert("You are using Firefox 1.x or above")
	}

// detect IE and version
	if (navigator.appVersion.indexOf("MSIE")!=-1)
	{	var version = 0;
		var b_version = navigator.appVersion.split("MSIE");
		version = parseFloat(b_version[1]);
		
		if (version >= 5.5) //NON IE browser will return 0
			alert("You're using IE " + version);
	}

// detect Opera
	if(navigator.userAgent.indexOf("Opera")!=-1)
	{
		var versionindex=navigator.userAgent.indexOf("Opera")+6
		if (parseInt(navigator.userAgent.charAt(versionindex))>=8)
		alert("You are using Opera 8 or 9")
	}

}

function switcher(elem){
	var elem = document.getElementById(elem);
	if(elem != null){
		elem.style.display = '';
		}
	}
	

function reswitcher(){
	var parentesis = document.getElementById('top_nav');
	var difsInside = parentesis.getElementsByTagName('div');
	var SearchStr1 = 'sub_'

	var legCut1 = SearchStr1.length;

	for(var i = 0; i < difsInside.length; i++){
		var thisid = difsInside[i].id;
		if(thisid.substring(0, legCut1) == SearchStr1){
			difsInside[i].style.display = 'none';
		}
	}
}


function setsubnav(actelem, elemname)
{
	var thiselement = document.getElementById(actelem);
	var subelements = thiselement.getElementsByTagName('div');
	for( var i = 0; i < subelements.length; i++)
	{
		if(subelements[i].id != elemname)
		{
			subelements[i].style.display='none';
		}else{
			subelements[i].style.display='block';
		}
	}
}