function BrowserDetection(){
  this.appName = "unbekannt";
  this.appVersion = -1;
  this.isIE = this.isFF = this.isNetscape = this.isOpera = this.isSafari = false;
  this.UA = navigator.userAgent.toLowerCase();

  // IE
  if(this.UA.search(/msie/) != -1){
    this.appName = "IE";
    this.isIE = true;
    this.appVersion = parseFloat(/(msie[^;]*)/.exec(this.UA)[0].split(" ")[1]);
  // Opera
  }else if(this.UA.search(/opera/) != -1){
    this.appName = "Opera";
    this.isOpera = true;
    this.appVersion = parseFloat(/(opera[^\s]*)/.exec(this.UA)[0].split("/")[1]);
  // Firefox
  }else if(this.UA.search(/firefox/) != -1){
    this.appName = "Firefox";
    this.isFF = true;
    this.appVersion = parseFloat(/(firefox[^\s]*)/.exec(this.UA)[0].split("/")[1]);
  // Safari	
  }else if(this.UA.search(/khtml/) != -1){
    this.appName = "Safari (Win)";
    this.isSafari = true;
    this.appVersion = parseFloat(/(version[^\s]*)/.exec(this.UA)[0].split("/")[1]);
  // Safari	
  }else if(this.UA.search(/safari/) != -1){
    this.appName = "Safari";
    this.isSafari = true;
    this.appVersion = parseFloat(/(version[^\s]*)/.exec(this.UA)[0].split("/")[1]);
  // Netscape
  }else if(this.UA.search(/mozilla/) != -1){
    this.appName = "Mozilla";
    this.isNetscape = true;
    this.appVersion = parseFloat(/(mozilla[^\s]*)/.exec(this.UA)[0].split("/")[1]);	
  // Netscape
  }else if(this.UA.search(/netscape/) != -1){
    this.appName = "Netscape";
    this.isNetscape = true;
    this.appVersion = parseFloat(/(netscape[^\s]*)/.exec(this.UA)[0].split("/")[1]);
	}
}


// pseudo-class for IE start

function sfIEStart(type, tag, parentId) {
	if (window.attachEvent) {
		window.attachEvent("onload", function() {
			var sfEls = (parentId==null)?document.getElementsByTagName(tag):document.getElementById(parentId).getElementsByTagName(tag);
			type(sfEls);
		});
	}
}

sfHover = function(sfEls) {
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}

sfFocus = function(sfEls) {
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onfocus=function() {
			this.className+=" sffocus";
		}
		sfEls[i].onblur=function() {
			this.className=this.className.replace(new RegExp(" sffocus\\b"), "");
		}
	}
}

sfActive = function(sfEls) {
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmousedown=function() {
			this.className+=" sfactive";
		}
		sfEls[i].onmouseup=function() {
			this.className=this.className.replace(new RegExp(" sfactive\\b"), "");
		}
	}
}

sfTarget = function(sfEls) {
	var aEls = document.getElementsByTagName("A");
	document.lastTarget = null;
	for (var i=0; i<sfEls.length; i++) {
		if (sfEls[i].id) {
			if (location.hash==("#" + sfEls[i].id)) {
				sfEls[i].className+=" sftarget";
				document.lastTarget=sfEls[i];
			}
			for (var j=0; j<aEls.length; j++) {
				if (aEls[j].hash==("#" + sfEls[i].id)) aEls[j].targetEl = sfEls[i];
				aEls[j].onclick = function() {
					if (document.lastTarget) docu.lastTarget.className = document.lastTarget.className.replace(new RegExp(" sftarget\\b"), "");
					if (this.targetEl) this.targetEl.className+=" sftarget";
					document.lastTarget=this.targetEl;
					return true;
				}
			}
		}
	}
}

sfIEStart(sfFocus, "INPUT");
sfIEStart(sfFocus, "TEXTAREA");
sfIEStart(sfFocus, "SELECT");
sfIEStart(sfActive, "SELECT");

// pseudo-class for IE end