//***Clasica funcion de revision isNumeric	
	function isNumeric(sText){
		var ValidChars = "0123456789";
		var IsNumber=true;
		var Char;

 
		for (i = 0; i < sText.length && IsNumber == true; i++) { 
			Char = sText.charAt(i); 
			if (ValidChars.indexOf(Char) == -1) {
				IsNumber = false;
			}
		}
		return IsNumber;   
	}
//***Revisa el submit
	function revisaSubmit(idForm){
		return agregarCarrito(idForm);
	}
//***Funcion de agregar al carrito
	function agregarCarrito(idForm){
	        var formularioRecibido = document.forms[idForm];
        
	        if (formularioRecibido.cantidad.value != ''){
			if (isNumeric(formularioRecibido.cantidad.value) && formularioRecibido.cantidad.value > 0){
				formularioRecibido.submit();
				return true;
			}
			else{
				alert(formularioRecibido.cantidad.value + " no es un entero mayor que 0.");
			}
		}
		else{
			alert("Introduce la cantidad a comprar.");
		}
		return false;
	}
//***Funcion de agregar al carrito pasando el form
	function agregarCarritoForm(form){      
	        if (form.cantidad.value != ''){
			if (isNumeric(form.cantidad.value) && form.cantidad.value > 0){
				form.submit();
				return true;
			}
			else{
				alert(form.cantidad.value + " no es un entero mayor que 0.");
			}
		}
		else{
			alert("Introduce la cantidad a comprar.");
		}
		return false;
	}
	
////////////Barra flotante del carrito
var persistclose=0 //set to 0 or 1. 1 means once the bar is manually closed, it will remain closed for browser session
var startX = 1 //set x offset of bar in pixels
var startY = 1 //set y offset of bar in pixels
var verticalpos="frombottom" //enter "fromtop" or "frombottom"

function iecompattest(){
	return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function get_cookie(Name) {
	var search = Name + "="
	var returnvalue = "";
	if (document.cookie.length > 0) {
		offset = document.cookie.indexOf(search)
		if (offset != -1) {
			offset += search.length
			end = document.cookie.indexOf(";", offset);
			if (end == -1) end = document.cookie.length;
				returnvalue=unescape(document.cookie.substring(offset, end))
		}
	}
	return returnvalue;
}

function closebar(){
	if (persistclose)
		document.cookie="remainclosed=1"
	document.getElementById("topbar").style.visibility="hidden"
}

function staticbar(){
	barheight=document.getElementById("topbar").offsetHeight
	var ns = (navigator.appName.indexOf("Netscape") != -1) || window.opera;
	var d = document;
	function ml(id){
		var el=d.getElementById(id);
		if (!persistclose || persistclose && get_cookie("remainclosed")=="")
			el.style.visibility="visible"
		if(d.layers)
			el.style=el;
		el.sP=function(x,y){this.style.left=x+"px";this.style.top=y+"px";};
		el.x = startX;
		if (verticalpos=="fromtop")
			el.y = startY;
		else{
			el.y = ns ? pageYOffset + innerHeight : iecompattest().scrollTop + iecompattest().clientHeight;
			el.y -= startY;
		}
		return el;
	}
	window.stayTopLeft=function(){
		if (verticalpos=="fromtop"){
			var pY = ns ? pageYOffset : iecompattest().scrollTop;
			ftlObj.y += (pY + startY - ftlObj.y)/8;
		}
		else{
			var pY = ns ? pageYOffset + innerHeight - barheight: iecompattest().scrollTop + iecompattest().clientHeight - barheight;
			ftlObj.y += (pY - startY - ftlObj.y)/8;
		}
		ftlObj.sP(ftlObj.x, ftlObj.y);
		setTimeout("stayTopLeft()", 10);
	}
	ftlObj = ml("topbar");
	stayTopLeft();
}

if (window.addEventListener)
	window.addEventListener("load", staticbar, false)
else if (window.attachEvent)
	window.attachEvent("onload", staticbar)
else if (document.getElementById)
	window.onload=staticbar