//reloads the window if Nav4 resized
function MM_reloadPage(init) {
  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);


// Determine if value is valid email adress
function isValidEmail(obj) {
	var strok = /^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/;
	return ( strok.exec( obj.value ) );
}

function trim (zeichenkette) { return zeichenkette.replace (/^\s+/, '').replace (/\s+$/, ''); }

function isEmpty(sToCheck) {
   var sTest
   if (sToCheck.value!=null)
      sTest = trim(sToCheck.value)
   return (sTest == null || sTest == "") 
}

function disableScreen() {
	eval("document.getElementById('disabler')").style.left = window.event.clientX-100;
	eval("document.getElementById('disabler')").style.top = window.event.clientY-100
	eval("document.getElementById('disabler')").style.visibility="visible";
	//eval("document.getElementById('wait')").style.visibility="visible";
}