// browser detection
var myAgent   = navigator.userAgent.toLowerCase();
var myVersion = parseInt(navigator.appVersion);
var is_ie   = ((myAgent.indexOf("msie") != -1)  && (myAgent.indexOf("opera") == -1));
var is_win   =  ((myAgent.indexOf("win")!=-1) || (myAgent.indexOf("16bit")!=-1));
var text = "";
function namedlink(theForm,theType) {
//alert(theForm);
//alert(theType);  
  
  link_text_prompt = "Geben Sie einen Linknamen ein (optional):";
  link_url_prompt = "Geben Sie die volle Adresse des Links ein:";
	var selected = getSelectedText(theForm);
	var linkText = prompt(link_text_prompt,selected);
	var prompttext;
 
	if (theType == "URL") {
 		prompt_text = link_url_prompt;
 		prompt_contents = "http://";
	}
	else {
		prompt_text = link_email_prompt;
		prompt_contents = "";
		}
 
	linkURL = prompt(prompt_text,prompt_contents);
 
 
	if ((linkURL != null) && (linkURL != "")) {
		var theText = '';
		
		if ((linkText != null) && (linkText != "")) {
   			theText = "["+theType+"="+linkURL+"]"+linkText+"[/"+theType+"]";
   		}
		else {
			theText = "["+theType+"]"+linkURL+"[/"+theType+"]";
		}
  		
  		addText(theText, "", false, theForm, text);
 	}
}

function getSelectedText(theForm) {
  //alert(text);
  //alert(theForm);
	var message = theForm[text];
	//alert(message);
	var selected = '';
	
	if(navigator.appName=="Netscape" &&  message.textLength>=0 && message.selectionStart!=message.selectionEnd ) 
  		selected=message.value.substring(message.selectionStart,message.selectionEnd);	
  	
	else if( (myVersion >= 4) && is_ie && is_win ) {
		if(message.isTextEdit){ 
			message.focus();
			var sel = document.selection;
			var rng = sel.createRange();
			rng.colapse;
			
			if((sel.type == "Text" || sel.type == "None") && rng != null){
				if(rng.text.length > 0) selected = rng.text;
			}
		}	
	}
		 
  	return selected;
}


function addText(theTag, theClsTag, isSingle, theForm)
{
	var isClose = false;
	var message = theForm[text];
	var set=false;
  	var old=false;
  	var selected="";
  	
  	if(message.textLength>=0 ) { // mozilla, firebird, netscape
  		if(theClsTag!="" && message.selectionStart!=message.selectionEnd) {
  			selected=message.value.substring(message.selectionStart,message.selectionEnd);
  			str=theTag + selected+ theClsTag;
  			old=true;
  			isClose = true;
  		}
		else {
			str=theTag;
		}
		
		message.focus();
		start=message.selectionStart;
		end=message.textLength;
		endtext=message.value.substring(message.selectionEnd,end);
		starttext=message.value.substring(0,start);
		message.value=starttext + str + endtext;
		message.selectionStart=start;
		message.selectionEnd=start;
		
		message.selectionStart = message.selectionStart + str.length;
		
		if(old) { return false; }
		
		set=true;
		
		if(isSingle) {
			isClose = false;
		}
	}
	if ( (myVersion >= 4) && is_ie && is_win) {  // Internet Explorer
		if(message.isTextEdit) {
			message.focus();
			var sel = document.selection;
			var rng = sel.createRange();
			rng.colapse;
			if((sel.type == "Text" || sel.type == "None") && rng != null){
				if(theClsTag != "" && rng.text.length > 0)
					theTag += rng.text + theClsTag;
				else if(isSingle)
					isClose = true;
	
				rng.text = theTag;
			}
		}
		else{
			if(isSingle) isClose = true;
	
			if(!set) {
      				message.value += theTag;
      			}
		}
	}
	else
	{
		if(isSingle) isClose = true;

		if(!set) {
      			message.value += theTag;
      		}
	}

	message.focus();
	
	return isClose;
}	
/*
function eingabeEinAusblenden() {
      var formular = document.getElementById("formular");
      var auswahl = formular.elements["auswahl"];
      var eingabe = formular.elements["eingabe"];
      eingabe.style.display = auswahl.selectedIndex == 0 ? "none" : "";
   }
   window.onload = function () {
      eingabeEinAusblenden();
      document.getElementById("formular").elements["auswahl"].onchange = eingabeEinAusblenden;
   }
*/
function inserte(aTag, eTag) {
  var input = document.forms['formular'].elements[text];
  input.focus();
  /* für Internet Explorer */
  if(typeof document.selection != 'undefined') {
    /* Einfügen des Formatierungscodes */
    var range = document.selection.createRange();
    var insText = range.text;
    range.text = aTag + insText + eTag;
    /* Anpassen der Cursorposition */
    range = document.selection.createRange();
    if (insText.length == 0) {
      range.move('character', -eTag.length);
    } else {
      range.moveStart('character', aTag.length + insText.length + eTag.length);      
    }
    range.select();
  }
  /* für neuere auf Gecko basierende Browser */
  else if(typeof input.selectionStart != 'undefined')
  {
    /* Einfügen des Formatierungscodes */
    var start = input.selectionStart;
    var end = input.selectionEnd;
    var insText = input.value.substring(start, end);
    input.value = input.value.substr(0, start) + aTag + insText + eTag + input.value.substr(end);
    /* Anpassen der Cursorposition */
    var pos;
    if (insText.length == 0) {
      pos = start + aTag.length;
    } else {
      pos = start + aTag.length + insText.length + eTag.length;
    }
    input.selectionStart = pos;
    input.selectionEnd = pos;
  }
  /* für die übrigen Browser */
  else
  {
    /* Abfrage der Einfügeposition */
    var pos;
    var re = new RegExp('^[0-9]{0,3}$');
    while(!re.test(pos)) {
      pos = prompt("Einfügen an Position (0.." + input.value.length + "):", "0");
    }
    if(pos > input.value.length) {
      pos = input.value.length;
    }
    /* Einfügen des Formatierungscodes */
    var insText = prompt("Bitte geben Sie den zu formatierenden Text ein:");
    input.value = input.value.substr(0, pos) + aTag + insText + eTag + input.value.substr(pos);
  }
}

function insert2(aTag, eTag) {
  var input = document.forms['formular'].elements['text2'];
  input.focus();
  /* für Internet Explorer */
  if(typeof document.selection != 'undefined') {
    /* Einfügen des Formatierungscodes */
    var range = document.selection.createRange();
    var insText = range.text;
    range.text = aTag + insText + eTag;
    /* Anpassen der Cursorposition */
    range = document.selection.createRange();
    if (insText.length == 0) {
      range.move('character', -eTag.length);
    } else {
      range.moveStart('character', aTag.length + insText.length + eTag.length);      
    }
    range.select();
  }
  /* für neuere auf Gecko basierende Browser */
  else if(typeof input.selectionStart != 'undefined')
  {
    /* Einfügen des Formatierungscodes */
    var start = input.selectionStart;
    var end = input.selectionEnd;
    var insText = input.value.substring(start, end);
    input.value = input.value.substr(0, start) + aTag + insText + eTag + input.value.substr(end);
    /* Anpassen der Cursorposition */
    var pos;
    if (insText.length == 0) {
      pos = start + aTag.length;
    } else {
      pos = start + aTag.length + insText.length + eTag.length;
    }
    input.selectionStart = pos;
    input.selectionEnd = pos;
  }
  /* für die übrigen Browser */
  else
  {
    /* Abfrage der Einfügeposition */
    var pos;
    var re = new RegExp('^[0-9]{0,3}$');
    while(!re.test(pos)) {
      pos = prompt("Einfügen an Position (0.." + input.value.length + "):", "0");
    }
    if(pos > input.value.length) {
      pos = input.value.length;
    }
    /* Einfügen des Formatierungscodes */
    var insText = prompt("Bitte geben Sie den zu formatierenden Text ein:");
    input.value = input.value.substr(0, pos) + aTag + insText + eTag + input.value.substr(pos);
  }
}