var carregandoImagem = "<img src='./carregando.gif' border='0' />";

var carregarcaptcha={
"loadingmessage": carregandoImagem +" Carregando...",
exfilesadded: "",

connect:function(containerid, pageurl, bustcache, jsfiles, cssfiles){
	var page_request = false
	var bustcacheparameter=""
	if (window.XMLHttpRequest)
		page_request = new XMLHttpRequest()
	else if (window.ActiveXObject){
		try {
		page_request = new ActiveXObject("Msxml2.XMLHTTP")
		} 
		catch (e){
			try{
			page_request = new ActiveXObject("Microsoft.XMLHTTP")
			}
			catch (e){}
		}
	}
	else
		return false
	var ajaxfriendlyurl=pageurl.replace(/^http:\/\/[^\/]+\//i, "http://"+window.location.hostname+"/") 
	page_request.onreadystatechange=function(){carregarcaptcha.loadpage(page_request, containerid, pageurl, jsfiles, cssfiles)}
	if (bustcache)
		bustcacheparameter=(ajaxfriendlyurl.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
	document.getElementById(containerid).innerHTML=carregarcaptcha.loadingmessage
	page_request.open('GET', ajaxfriendlyurl+bustcacheparameter, true)
	page_request.send(null)
},

loadpage:function(page_request, containerid, pageurl, jsfiles, cssfiles){
	if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1)){
		document.getElementById(containerid).innerHTML=page_request.responseText
		for (var i=0; i<jsfiles.length; i++)
			this.loadjscssfile(jsfiles[i], "js")
		for (var i=0; i<cssfiles.length; i++)
			this.loadjscssfile(cssfiles[i], "css")
		this.pageloadaction(pageurl)
	}
},

createjscssfile:function(filename, filetype){
	if (filetype=="js"){
		var fileref=document.createElement('script')
		fileref.setAttribute("type","text/javascript")
		fileref.setAttribute("src", filename)
	}
	else if (filetype=="css"){
		var fileref=document.createElement("link")
		fileref.setAttribute("rel", "stylesheet")
		fileref.setAttribute("type", "text/css")
		fileref.setAttribute("href", filename)
	}
	return fileref
},

loadjscssfile:function(filename, filetype){
	if (this.exfilesadded.indexOf("["+filename+"]")==-1){
		var newelement=this.createjscssfile(filename, filetype)
		document.getElementsByTagName("head")[0].appendChild(newelement)
		this.exfilesadded+="["+filename+"]"
	}
	else{
 	var targetelement=(filetype=="js")? "script" : (filetype=="css")? "link" : "none"
 	var targetattr=(filetype=="js")? "src" : (filetype=="css")? "href" : "none"
 	var allsuspects=document.getElementsByTagName(targetelement)
 	for (var i=allsuspects.length; i>=0; i--){
  	if (allsuspects[i] && allsuspects[i].getAttribute(targetattr)!=null && allsuspects[i].getAttribute(targetattr).indexOf(filename)!=-1){
   	var newelement=this.createjscssfile(filename, filetype)
   	allsuspects[i].parentNode.replaceChild(newelement, allsuspects[i])
  	}
		}
 }
},


pageloadaction:function(pageurl){
	this.onpageload(pageurl)
},

onpageload:function(pageurl){

},

load:function(containerid, pageurl, bustcache, jsfiles, cssfiles){
	var jsfiles=(typeof jsfiles=="undefined" || jsfiles=="")? [] : jsfiles
	var cssfiles=(typeof cssfiles=="undefined" || cssfiles=="")? [] : cssfiles
	this.connect(containerid, pageurl, bustcache, jsfiles, cssfiles)
}

}