function MM_preloadImages() { //v2.0
  if (document.images) {
	var imgFiles = MM_preloadImages.arguments;
	if (document.preloadArray==null) document.preloadArray = new Array();
	var i = document.preloadArray.length;
	with (document) for (var j=0; j<imgFiles.length; j++) if (imgFiles[j].charAt(0)!="#"){
	  preloadArray[i] = new Image;
	  preloadArray[i++].src = imgFiles[j];
  } }
}

function MM_swapImgRestore() { //v2.0
  if (document.MM_swapImgData != null)
	for (var i=0; i<(document.MM_swapImgData.length-1); i+=2)
	  document.MM_swapImgData[i].src = document.MM_swapImgData[i+1];
}

function MM_swapImage() { //v2.0
  var i,j=0,objStr,obj,swapArray=new Array,oldArray=document.MM_swapImgData;
  for (i=0; i < (MM_swapImage.arguments.length-2); i+=3) {
	objStr = MM_swapImage.arguments[(navigator.appName == 'Netscape')?i:i+1];
	if ((objStr.indexOf('document.layers[')==0 && document.layers==null) ||
		(objStr.indexOf('document.all[')   ==0 && document.all   ==null))
	  objStr = 'document'+objStr.substring(objStr.lastIndexOf('.'),objStr.length);
	obj = eval(objStr);
	if (obj != null) {
	  swapArray[j++] = obj;
	  swapArray[j++] = (oldArray==null || oldArray[j-1]!=obj)?obj.src:oldArray[j];
	  obj.src = MM_swapImage.arguments[i+2];
  } }
  document.MM_swapImgData = swapArray; //used for restore
}

function validateEmail( textfield ) {
  var status = true;
  if( textfield.value == '' ) {
    alert( 'Please enter a valid email address.' );
    status = false;
  }
  return status;
}

function validatePassword( textfield ) {
  var status = true;
  if( textfield.value == '' ) {
    alert( 'Please enter a valid password.' );
    status = false;
  }
  return status;
}

function validateOmniChexUrl( textfield ) {
  var urlToLicense = trim( textfield.value ).toLowerCase();
  var status = true;
  var ipre = new RegExp( '\\d+\\.\\d+\\.\\d+\\.\\d+' );
  if( urlToLicense == '' ) {
    alert( 'Please enter a Server Name.' );
    status = false;
  }
  else if( urlToLicense == 'localhost' ) {
    alert( 'localhost is not a valid Server URL. Please use the explicit URL of your server.' );
    status = false;
  }
  else if( ipre.test( urlToLicense ) ) {
    alert( 'IP adresses are not permitted for server URL. Please use the URL of your server.' );
    status = false;
  }
  textfield.value = urlToLicense;
  return status;
}

function trim( myString ) {
  myString = stripLeadingSpace( myString );
  myString = stripTrailingSpace( myString );
  return myString;
}

function stripLeadingSpace( myString ) {
  if( myString.charAt( 0 ) == ' ' ) {
    myString = stripLeadingSpace( myString.substr( 1, myString.length - 1 ) );
  }
  return myString;
}

function stripTrailingSpace( myString ) {
  if( myString.charAt( myString.length - 1 ) == ' ' ) {
    myString = stripTrailingSpace( myString.substr( 0, myString.length - 1 ) );
  }
  return myString;
}