/* DHTML-Bibliothek */

var DHTML = false, DOM = false, MSIE4 = false, NS4 = false, OP = false;

if (document.getElementById) {
  DHTML = true;
  DOM = true;
} else {
  if (document.all) {
    DHTML = true;
    MSIE4 = true;
  } else {
    if (document.layers) {
      DHTML = true;
      NS4 = true;
    }
  }
}
if (window.opera) {
  OP = true;
}

function getElement (Mode, Identifier, ElementNumber) {
  var Element;
  if (DOM) {
    if (Mode.toLowerCase() == "id") {
      if (typeof document.getElementById(Identifier) == "object") {
        Element = document.getElementById(Identifier);
      } else {
        Element = false;
      }
      return Element;
    }
    if (Mode.toLowerCase() == "name") {
      var ElementList = document.getElementsByName(Identifier);
      if (typeof ElementList == "object" || (OP && typeof ElementList == "function")) {
        Element = ElementList[ElementNumber];
      } else {
        Element = false;
      }
      return Element;
    }
    if (Mode.toLowerCase() == "tagname") {
      var ElementList = document.getElementsByTagName(Identifier);
      if (typeof ElementList == "object" || (OP && typeof ElementList == "function")) {
        Element = ElementList[ElementNumber];
      } else {
        Element = false;
      }
      return Element;
    }
    return null;
  }
  if (MSIE4) {
    if (Mode.toLowerCase() == "id") {
      if (typeof document.all[Identifier] == "object") {
        Element = document.all[Identifier];
      } else {
        Element = false;
      }
      return Element;
    }
    if (Mode.toLowerCase() == "tagname") {
      if (typeof document.all.tags(Identifier) == "object") {
        Element = document.all.tags(Identifier)[ElementNumber];
      } else {
        Element = false;
      }
      return Element;
    }
    if (Mode.toLowerCase() == "name") {
      if (typeof document[Identifier] == "object") {
        Element = document[Identifier];
      } else {
        Element = false;
      }
      return Element;
    }
    return false;
  }
  if (NS4) {
    if (Mode.toLowerCase() == "id" || Mode.toLowerCase() == "name") {
      if (typeof document[Identifier] == "object") {
        Element = document[Identifier];
      } else {
        Element = false;
      }
      return Element;
    }
    if (Mode.toLowerCase() == "index") {
      if (typeof document.layers[Identifier] == "object") {
        Element = document.layers[Identifier];
      } else {
        Element = false;
      }
      return Element;
    }
    return false;
  }
  return false;
}

function showMenu() {
	var hiddenCanv = getElement("id", "menuLeistungenCanvasHidden");
	var visiblCanv = getElement("id", "menuLeistungenCanvasVisible");
	hiddenCanv.style.visibility='visible';
	visiblCanv.style.visibility='hidden';
}
function hideMenu() {
	var hiddenCanv = getElement("id", "menuLeistungenCanvasHidden");
	var visiblCanv = getElement("id", "menuLeistungenCanvasVisible");
	hiddenCanv.style.visibility='hidden';
	visiblCanv.style.visibility='visible';
}
function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}