// Elemente ein- oder ausblenden

    function toggleDisplay(id) {

     el = document.getElementById(id);
     var display = el.style.display ? '' : 'none';
     el.style.display = display; 
    }

// onload

    function init() {
        document.getElementById('searchtext').onfocus = function(e) {
        
            var targ;
            if (!e) var e = window.event;
            if (e.target) targ = e.target;
            else if (e.srcElement) targ = e.srcElement;
            if (targ.nodeType == 3) // defeat Safari bug
                targ = targ.parentNode;
            targ.value = '';
        }

    }

    window.addEventListener?window.addEventListener("load",init,false):window.attachEvent("onload",init);


// #############################################################################

// ### open_function:

// #############################################################################

function open_function(url,width,height,options)

  {

    if ( height > screen.availHeight || width > screen.availWidth) {

      if ( options.indexOf( "scrollbars=") < 0) {

        if ( height > screen.availHeight)

          height = screen.availHeight;

        if ( width > screen.availWidth)

          width = screen.availWidth;

        options += ",scrollbars=yes";

      }

    }

    self.msgWindow = open(url, "Window", "width=" + width + ",height=" + height

      + ",screenX=" + (screen.width-width)/2

      + ",screenY=" + (screen.height-height)/2

      + ",dependent=yes"

      + ",left=" + (screen.width-width)/2

      + ",top=" + (screen.height-height)/2

      + options

      );

    if (self.msgWindow) {

      self.msgWindow.focus();

      if (self.msgWindow.opener == null) self.msgWindow.opener = self;

    }

  }



function get_url (url, k0 ,v0 ,k1 ,v1 ,k2 ,v2 ,k3 ,v3 ,k4 ,v4 ) 
{
  if (k0 && v0) url += "?" + k0 + "=" + escape(v0);
  if (k1 && v1) url += "&" + k1 + "=" + escape(v1);
  if (k2 && v2) url += "&" + k2 + "=" + escape(v2);
  if (k3 && v3) url += "&" + k3 + "=" + escape(v3);
  if (k4 && v4) url += "&" + k4 + "=" + escape(v4);
  return url;
}