function popup(url,wname,width,height){
	var win = window.open(url,wname,"width="+width+',height='+height);
	if(!win){
		alert("Por favor, desabilite seu bloqueador de Popups");
	}
}

var facebookWin;
var facebookWinInterval;

function popupFacebook(url,wname,width,height){
	facebookWin = window.open(url,wname,"width="+width+',height='+height);
	if(!facebookWin){
		alert("Por favor, desabilite seu bloqueador de Popups");
	}
	
	facebookWinInterval = setInterval(checkFacebook,5000);
}

function checkFacebook(){
	if(facebookWin){
		if(facebookWin.xml){
			clearInterval(facebookWinInterval);		
			GetFlashMovie().facebookResponse('response='+facebookWin.xml);
			facebookWin.close();
			facebookWin=null;
		}
	}
	
}


function GetFlashMovie() {
			var movieName = 'main';
			var isIE = navigator.appName.indexOf("Microsoft") != -1;
			return (isIE) ? window[movieName] : document[movieName];
		}
		
		var filesadded="" //list of files already added
	
		function loadjscssfile(filename, filetype){
			 if (filetype=="js"){ //if filename is a external JavaScript file
			  var fileref=document.createElement('script')
			  fileref.setAttribute("type","text/javascript")
			  fileref.setAttribute("src", filename)
			 }
			 else if (filetype=="css"){ //if filename is an external CSS file
			  var fileref=document.createElement("link")
			  fileref.setAttribute("rel", "stylesheet")
			  fileref.setAttribute("type", "text/css")
			  fileref.setAttribute("href", filename)
			 }
			 if (typeof fileref!="undefined")
			  document.getElementsByTagName("head")[0].appendChild(fileref)
			}

	
		function checkloadjscssfile(filename, filetype){
		 if (filesadded.indexOf("["+filename+"]")==-1){
		  loadjscssfile(filename, filetype)
		  filesadded+="["+filename+"]" //List of files added in the form "[filename1],[filename2],etc"
		 }
		 else
		  alert("file already added!")
		}

		
		function loadFacebook(){
			//checkloadjscssfile("http://static.ak.facebook.com/js/api_lib/v0.4/FeatureLoader.js.php", "js")
		}