/*

	core lib for all scripts
	
	
	zoonman at gmail . com
	
*/




var _eCache = {};
function $(id) {
	return _eCache[id] || (_eCache[id] = (document.getElementById) ? document.getElementById(id) : document.all(id));
}
 
 
function $_(id) {
	return  ((document.getElementById) ? document.getElementById(id) : document.all(id));
}
/*
 Ajax Loader Class
*/

/* namespacing object */
var net=new Object();
net.READY_STATE_UNINITIALIZED=0;
net.READY_STATE_LOADING=1;
net.READY_STATE_LOADED=2;
net.READY_STATE_INTERACTIVE=3;
net.READY_STATE_COMPLETE=4;
/*--- content loader object for cross-browser requests ---*/
net.ContentLoader=function(url,onload,onerror,method,params,contentType,update_object){
  this.req=null;
  this.onload=onload;
  this.onerror=(onerror) ? onerror : this.defaultError;
  this.update_object = update_object;
  this.loadXMLDoc(url,method,params,contentType);
}
net.ContentLoader.prototype.loadXMLDoc=function(url,method,params,contentType){
  if (!method){
    method="GET";
  }
  if (!contentType && method=="POST"){
    contentType='application/x-www-form-urlencoded';
  }

  if (!this.req) try {
    this.req = new XMLHttpRequest();
  } catch (e){;};
  if (!this.req) try {
    this.req = new ActiveXObject('Msxml2.XMLHTTP');
  } catch (e){;};
  if (!this.req) try {
    this.req = new ActiveXObject('Microsoft.XMLHTTP');
  } catch (e){;};
  
  if (this.req){
    try{
      var loader=this;
      this.req.onreadystatechange=function(){
        net.ContentLoader.onReadyState.call(loader);
      }
      this.req.open(method,url,true);
      if (contentType){
        this.req.setRequestHeader('Content-Type', contentType);
      }
      this.req.send(params);
    }catch (err){
      this.onerror.call(this);
    }
  }
}
net.ContentLoader.onReadyState=function(){
  var req=this.req;
  var ready=req.readyState;
  
  if (ready==net.READY_STATE_COMPLETE){
  	var httpStatus=req.status;
    if (httpStatus==200 || httpStatus==0){
      this.onload.call(this);
    }else{
      this.onerror.call(this);
    }
  }
}
net.ContentLoader.prototype.defaultError=function(){
  alert("error fetching data!"
    +"\n\nreadyState:"+this.req.readyState
    +"\nstatus: "+this.req.status
    +"\nheaders: "+this.req.getAllResponseHeaders());
}