var http = createRequestObject();
var uploader = '';
var upcode =  new Array(6);


function createRequestObject() {
    var obj;
	if(window.XMLHttpRequest){
		obj = new XMLHttpRequest();
	}else if(window.ActiveXObject){
		obj = new ActiveXObject("Microsoft.XMLHTTP");
	}
	return obj;    
}

function setStyleById(i, p, v) {
	var n = document.getElementById(i);
	n.style[p] = v;
}

function traceUpload(filename) {
	
		try{
		   http = createRequestObject();
		   http.onreadystatechange = handleResponse;
		
		   http.open("GET",'verifyUpload.php?filename='+filename); 
		   http.send(null); 
		}catch(err){
			alert("Error");
		}
}


function handleResponse() {
	
	if(http.readyState == 4){
		if(http.responseText.charAt(0)=='8'){
			arr = http.responseText.split('\n');
			size ='';
			filename='';
			if(arr.length > 2){
				size = arr[1];
				filename = arr[2];
			}

			document.getElementById('userfile'+uploader).innerHTML = "<span>Archivo subido ("+size+" bytes) <a href=\"#\" onclick=\"reUpCode('"+uploader+"')\"><img src=\"img/b_drop.png\" width=\"16\" height=\"16\" border=\"0\" /><a></span>";
			
			document.getElementById('add').disabled=false;
			
		}else if(http.responseText.charAt(0)=='7'){
			//alert('');
			reUpCode(uploader);
		}else if(http.responseText.charAt(0)=='6'){
			alert('Error');
			reUpCode(uploader);
		}else if(http.responseText.charAt(0)=='5'){
			alert('Error');
			reUpCode(uploader);
		}else
		if(http.responseText.charAt(0)=='4'){
			alert('Error');
			reUpCode(uploader);
		}else
		if(http.responseText.charAt(0)=='3'){
			alert('Error');
			reUpCode(uploader);
		}else
		if(http.responseText.charAt(0)=='2'){
			alert('Error');
			reUpCode(uploader);
		}else
		if(http.responseText.charAt(0)=='1'){
			alert('Error');
			reUpCode(uploader);
		}else{
			alert('Error');
			reUpCode(uploader);
		}
    }
    else {
		document.getElementById('add').disabled=true;
    	document.getElementById('userfile'+uploader).innerHTML = "Subiendo archivo. <img src=\"img/indicator.gif\" width=\"16\" height=\"16\">";
    }
}


function uploadFile(obj,filename) {
	uploaderId = 'userfile'+obj;
	ID=obj;
	uploader = obj;
	
	document.getElementById('formName'+obj).submit();
	
	document.getElementById('files').value = document.getElementById('files').value+" , "+filename;
	
	upcode[obj.charAt(2)-1] = document.getElementById(uploaderId).innerHTML;
	traceUpload(filename);

}

function reUpCode(obj) {

	document.getElementById('userfile'+obj).innerHTML= upcode[obj.charAt(2)-1];

}

function comm (part){
alert(part);
}



function valExt(obj,type){
	var temp = obj.value.split('.');
	var ext = temp[temp.length-1];
	var exts = new Array();
	
	if(type=='stream'){
		exts[0] = 'flv';
	}else if(type=='movies'){
		exts[0] = 'mov';
		exts[1] = 'mpeg';
		exts[2] = 'mpg';
		exts[3] = 'wmv';
		exts[4] = 'mp4';
		exts[5] = 'asf';
		exts[6] = 'avi';
	}else if(type=='images'){
		exts[0] = 'gif';
		exts[1] = 'jpeg';
		exts[2] = 'jpg';
		exts[3] = 'png';
		exts[4] = 'jpe';
		exts[5] = 'bmp';
	}
	var x=0;
	for (x=0; x < exts.length; x++){
		if(exts[x] == ext.toLowerCase()){
			return true;
		}
	}
	obj.value='';
	alert('Archivo no valido, las fotos deben tener alguna de las siguientes \n extensiones: .gif , .jpeg, .jpg, .png, .jpe, .bmp');
	return false;
}