function addEvent( obj, event_name, func_name ) {
 if( obj.attachEvent )
  obj.attachEvent( "on" + event_name, func_name );
 else if( obj.addEventListener )
  obj.addEventListener( event_name, func_name, true );
 else
  obj["on" + event_name] = func_name;
}

function removeEvent( obj, event_name, func_name ) {
 if( obj.detachEvent )
  obj.detachEvent( "on" + event_name, func_name );
 else if( obj.removeEventListener )
  obj.removeEventListener( event_name, func_name, true );
 else
  obj["on" + event_name] = null;
}

function stopEvent( evt ) {
 evt || window.event;

 if( evt.stopPropagation ) {
  evt.stopPropagation();
  evt.preventDefault();
 }
 else if( typeof evt.cancelBubble != "undefined" ) {
  evt.cancelBubble = true;
  evt.returnValue = false;
 }

 return false;
}

function getElement( evt ) {
 if( window.event )
  return window.event.srcElement;
 else
  return evt.currentTarget;
}

function getTargetElement( evt ) {
 if( window.event )
  return window.event.srcElement;
 else
  return evt.target;
}

function stopSelect( obj ) {
 if( typeof obj.onselectstart != "undefined" )
  addEvent( obj, "selectstart", function(){ return false; } );
}

function getCaretEnd( obj ) {
 if( typeof obj.selectionEnd != "undefined" )
  return obj.selectionEnd;
 else if( document.selection && document.selection.createRange ) {
  var M = document.selection.createRange();

  try {
   var Lp = M.duplicate();
   Lp.moveToElementText( obj );
  }
  catch( e ) { var Lp = obj.createTextRange(); }

  Lp.setEndPoint( "EndToEnd", M );
  var rb = Lp.text.length;
  if( rb > obj.value.length ) return -1;
  return rb;
 }
}

function getCaretStart( obj ) {
 if( typeof obj.selectionStart != "undefined" )
  return obj.selectionStart;
 else if( document.selection && document.selection.createRange ) {
  var M = document.selection.createRange();

  try {
   var Lp = M.duplicate();
   Lp.moveToElementText( obj );
  }
  catch( e ) {
   var Lp = obj.createTextRange();
  }

  Lp.setEndPoint( "EndToStart", M );
  var rb = Lp.text.length;
  if( rb > obj.value.length ) return -1;
  return rb;
 }
}

function setCaret( obj, l ) {
 obj.focus();

 if( obj.setSelectionRange )
  obj.setSelectionRange( l, l );
 else if( obj.createTextRange ) {
  m = obj.createTextRange();		
  m.moveStart( "character", l );
  m.collapse();
  m.select();
 }
}

function setSelection( obj, s, e ) {
 obj.focus();

 if( obj.setSelectionRange )
  obj.setSelectionRange( s, e );
 else if( obj.createTextRange ) {
  m = obj.createTextRange();		
  m.moveStart( "character", s );
  m.moveEnd( "character", e );
  m.select();
 }
}

String.prototype.addslashes = function() {
 return this.replace( /(["\\\.\|\[\]\^\*\+\?\$\(\)])/g, "\\$1" );
}

String.prototype.trim = function () {
 return this.replace( /^\s*(\S*(\s+\S+)*)\s*$/, "$1" );
};

function curTop( obj ) {
 toreturn = 0;

 while( obj ) {
  toreturn += obj.offsetTop;
  obj = obj.offsetParent;
 }

 return toreturn;
}

function curLeft( obj ) {
 toreturn = 0;

 while( obj ) {
  toreturn += obj.offsetLeft;
  obj = obj.offsetParent;
 }

 return toreturn;
}

function isNumber( a ) {
 return ( typeof a == "number" ) && isFinite( a );
}

function replaceHTML( obj, text ) {
 while( el = obj.childNodes[0] )
  obj.removeChild( el );

 obj.appendChild( document.createTextNode( text ) );
}