function click(evt) {
 if (navigator.appName.indexOf("Microsoft") != -1){
 if (event.button==2) {
 alert('Copyright: Zellerhoff Tiefbau');
 return false
 };
 };
 if (navigator.appName.indexOf("Netscape") != -1) {
 if ( evt.which == 3 ) {
 alert('Copyright: Zellerhoff Tiefbau');
 return false
 };
 };
 };
 if (navigator.appName.indexOf("Netscape") != -1) {
 document.captureEvents( Event.MOUSEDOWN )
 };
 document.onmousedown = click;



function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}