/* 
http://snippets.dzone.com/posts/show/5182
NOTE: this function requires that the <script> declarations are in lower case 
*/
function parseAndEvalScripts(sIN){var sHTML="";if(sIN.indexOf("<script")>=0){var oHTML=sIN.split("</script>");for(iHTML=0;iHTML<oHTML.length;iHTML++){if(oHTML[iHTML].indexOf("<script")>= 0) {sHTML=oHTML[iHTML];sHTML=Right(sHTML,sHTML.length-sHTML.indexOf("<script")-7);sHTML=Right(sHTML,sHTML.length-sHTML.indexOf(">")-1);eval(sHTML);}}}};

function $(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 XMLHttpRequest()}catch(e){try{return new ActiveXObject('Microsoft.XMLHTTP')}catch(e){return new ActiveXObject('Msxml2.XMLHTTP')}}};
//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.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);var sOutput = i.concat(s).concat(t).join('&'); while (sOutput.indexOf('&&')>0) sOutput = sOutput.replace("&&","&"); return sOutput;}; // i've modified to clear out instances of "&&" in the POSTback
// RD 21-10-2008 karakters zoals in Wûnseradiel worden met encodeUriComponent omgezet in 1, 2 OF 3 utf-karakters. Maar php kan daar niet mee omgaan. Vandaar: terug naar 'escape':
ajax.serialize=function(f){var g=function(n){return f.getElementsByTagName(n)};var nv=function(e){if(e.name)return escape(e.name)+'='+escape(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);var sOutput = i.concat(s).concat(t).join('&'); while (sOutput.indexOf('&&')>0) sOutput = sOutput.replace("&&","&"); return sOutput;}; // i've modified to clear out instances of "&&" in the POSTback
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=$(elm);var f=function(r){e.innerHTML=r};ajax.get(url,f);};
ajax.submit=function(url,elm,frm){var e=$(elm);var f=function(r){e.innerHTML=r};ajax.post(url,f,ajax.serialize(frm))};


ajax.sendNoCache=function(u,f,m,a){u = u + (u.indexOf('?') < 0 ? '?' : '&') + 'noCache=' + new Date().getTime();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.getNoCache=function(url,func){url = url + (url.indexOf('?') < 0 ? '?' : '&') + 'noCache=' + new Date().getTime();ajax.send(url,func,'GET')};
ajax.getsNoCache=function(url){url = url + (url.indexOf('?') < 0 ? '?' : '&') + 'noCache=' + new Date().getTime();var x=ajax.x();x.open('GET',url,false);x.send(null);return x.responseText};
ajax.postNoCache=function(url,func,args){ajax.sendNoCache(url,func,'POST',args)};
ajax.updateNoCache=function(url,elm){var e=$(elm);var f=function(r){e.innerHTML=r};ajax.getNoCache(url,f);};
ajax.submitNoCache=function(url,elm,frm){var e=$(elm);var f=function(r){e.innerHTML=r};ajax.postNoCache(url,f,ajax.serialize(frm))};


ajax.sendNoCacheAndParse=function(u,f,m,a){u = u + (u.indexOf('?') < 0 ? '?' : '&') + 'noCache=' + new Date().getTime();var x=ajax.x();x.open(m,u,true);x.onreadystatechange=function(){if(x.readyState==4){parseAndEvalScripts(x.responseText);f(x.responseText);}};if(m=='POST')x.setRequestHeader('Content-type','application/x-www-form-urlencoded');x.send(a)};
ajax.getNoCacheAndParse=function(url,func){url = url + (url.indexOf('?') < 0 ? '?' : '&') + 'noCache=' + new Date().getTime();ajax.sendNoCacheAndParse(url,func,'GET')};
ajax.getsNoCacheAndParse=function(url){url = url + (url.indexOf('?') < 0 ? '?' : '&') + 'noCache=' + new Date().getTime();var x=ajax.x();x.open('GET',url,false);x.send(null);parseAndEvalScripts(responseText);return x.responseText;};
ajax.postNoCacheAndParse=function(url,func,args){ajax.sendNoCacheAndParse(url,func,'POST',args)};
ajax.updateNoCacheAndParse=function(url,elm){var e=$(elm);var f=function(r){e.innerHTML=r};ajax.getNoCacheAndParse(url,f);};
ajax.submitNoCacheAndParse=function(url,elm,frm){var e=$(elm);var f=function(r){e.innerHTML=r};ajax.postNoCacheAndParse(url,f,ajax.serialize(frm))};



/** HOW TO USE
ajax.x - The XMLHttpRequest object (or MS equivalent) used for communication

ajax.serialize(f)
  f = the form element you wish to be serialized
  This function serializes all the fields in a form so that they can be passed as a query string in the form 'arg1=val1&arg2=val2'.

ajax.get(url, func)
ajax.getNoCache(url, func)
ajax.getNoCacheAndParse(url, func)
  url = the url to query (can contain arguments after a '?')
  func = the function to call once the response is returned (no quotes)
  This function uses a GET request to query the specified url and return a response to the specified function.

ajax.gets(url)
ajax.getsNoCache(url)
ajax.getsNoCacheAndParse(url)
  url = the url to query (can contain arguments after a '?')
  This function uses a GET request to query the specified url and return a response synchronously. Use this sparingly, as synchronous calls can lock up the browser.

ajax.post(url, func, args)
ajax.postNoCache(url, func, args)
ajax.postNoCacheAndParse(url, func, args)
  url = the url to query
  func = the function to call once the response is returned (no quotes)
  args = a string containing arguments to be passed to the url
  This function uses a POST request to query the specified url and return a response to the specified function.

ajax.update(url, elm)
ajax.updateNoCache(url, elm)
ajax.updateNoCacheAndParse(url, elm)
  url = the url to query
  elm = the (name of the) element to update
  This function uses a GET request to query the specified url and insert the result into the specified element.

ajax.submit(url, elm, frm)
ajax.submitNoCache(url, elm, frm)
ajax.submitNoCacheAndParse(url, elm, frm)
  url = the url to query
  elm = the (name of the) element to update
  frm = the form element to submit
  This function is typically used in the onsubmit handler of a function. The form is not submitted the usual way; the form is instead serialized using 'ajax.serialize' and submitted using 'ajax.post'. The result is then inserted into the specified element.
*/