// Copyright (c) 2005 Timothy R. Morgan

// 

// Permission is hereby granted, free of charge, to any person obtaining a copy

// of this software and associated documentation files (the "Software"), to deal

// in the Software without restriction, including without limitation the rights

// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

// copies of the Software, and to permit persons to whom the Software is

// furnished to do so, subject to the following conditions:

// 

// The above copyright notice and this permission notice shall be included in

// all copies or substantial portions of the Software.

// 

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

// IN THE SOFTWARE.

// mini/ajax.js - http://timmorgan.org/mini



function ajax_item(e){if(typeof e=='string')e=document.getElementById(e);return e};

function collect(a,f){var n=[];for(var i=0;i<a.length;i++){var v=f(a[i]);if(v!=null)n.push(v)}return n};



ajax={};

ajax.x=function(){try{return new ActiveXObject('Msxml2.XMLHTTP')}catch(e){try{return new ActiveXObject('Microsoft.XMLHTTP')}catch(e){return new XMLHttpRequest()}}};

ajax.serialize=function(f)

  {

  var g=function(n)

    {

    return f.getElementsByTagName(n)

    };

  var nv=function(e)

    {

    if(e.name)

      {

      return encodeURIComponent(e.name)+'='+encodeURIComponent(e.value);

      } else {return '';}

    };

  var i=collect(g('input'),function(i){if((i.type!='radio'&&i.type!='checkbox')||i.checked)return nv(i)});var s=collect(g('select'),nv);var t=collect(g('textarea'),nv);return i.concat(s).concat(t).join('&');

  };

  

ajax.send=function(u,f,m,a){var x=ajax.x();x.open(m,u,true);x.onreadystatechange=function(){if(x.readyState==4)f(x.responseText)};if(m=='POST')x.setRequestHeader('Content-type','application/x-www-form-urlencoded');x.send(a)};

ajax.get=function(url,func){ajax.send(url,func,'GET')};

ajax.gets=function(url){var x=ajax.x();x.open('GET',url,false);x.send(null);return x.responseText};

ajax.post=function(url,func,args){ajax.send(url,func,'POST',args)};

ajax.update=function(url,elm){var e=ajax_item(elm);var f=function(r){e.innerHTML=r};ajax.get(url,f)};

ajax.submit=function(url,elm,frm){var e=ajax_item(elm);var f=function(r){e.innerHTML=r};ajax.post(url,f,ajax.serialize(frm))};