/********************************************************************
 * the following functions are made for easy inheritance on js-objects
 * see: http://javascript.crockford.com/inheritance.html
 * 
 * inheritance
 *
 ********************************************************************/

Function.prototype.method = function (name, func) {
    this.prototype[name] = func;
    return this;
};


Function.method('inherits', function (parent) {
    var d = {}, p = (this.prototype = new parent());
    this.method('uber', function uber(name) {
        if (!(name in d)) {
            d[name] = 0;
        }        
        var f, r, t = d[name], v = parent.prototype;
        if (t) {
            while (t) {
                v = v.constructor.prototype;
                t -= 1;
            }
            f = v[name];
        } else {
            f = p[name];
            if (f == this[name]) {
                f = v[name];
            }
        }
        d[name] += 1;
        r = f.apply(this, Array.prototype.slice.apply(arguments, [1]));
        d[name] -= 1;
        return r;
    });
    return this;
});

Function.method('swiss', function (parent) {
    for (var i = 1; i < arguments.length; i += 1) {
        var name = arguments[i];
        this.prototype[name] = parent.prototype[name];
    }
    return this;
});



function emptyForm(name) {
  var elem = document.forms[name].elements;
  var str = '';

  for(var i = 0; i < elem.length; i++) {
    var myname = elem[i].name;
    if(myname) {
      var e = document.forms[name].elements[myname];
      if(e) {
         var v = "";
         e.value = "";    
      }
    }
  }
}