function validar(i){
	camposTexto = document.getElementById("frmcarro").elements;
	p="";	cont=0;
	for (x=0;x<camposTexto.length;x++){
		if (camposTexto[x].value=='' && camposTexto[x].type=='text'){
			if(cont<=0)	primero=camposTexto[x].id;	
			p+=camposTexto[x].id+",";
			cont++;
		}
	}
	p=p.substring(0,p.length-1);
	if(cont>0){
		if(i==1){
			msn_uno="Debe ingresar cantidad en El Producto ";
			msn_varios="Debe ingresar cantidad en Los Productos ";
		}else{
			msn_uno="You must enter numbers in The Product ";
			msn_varios="You must enter numbers in Products ";	
		}
		if(cont>1){	
			alert(msn_varios+p+".");
		}else{
			alert(msn_uno+p+".");			
		}
		document.getElementById(primero).focus();
		return false;
	}else{
		return true;
	}
}
function validarCompra(i){
	camposTexto = document.getElementById("frmdatos").elements;
	p="";	cont=0;
	for (x=0;x<camposTexto.length;x++){
		if (camposTexto[x].value=='' && camposTexto[x].type=='text'){
			if(cont<=0)	primero=camposTexto[x].id;	
			p+=camposTexto[x].id+",";
			cont++;
		}
	}
	p=p.substring(0,p.length-1);
	if(cont>0){
		if(i==1){
			msn_uno="Debe llenar el campo ";
			msn_varios="Debe llenar los campos ";
		}else{
			msn_uno="It should fill the field ";
			msn_varios="You must fill fields ";
		}
		if(cont>1){	
			alert(msn_varios+p+".");
		}else{
			alert(msn_uno+p+".");			
		}
		document.getElementById(primero).focus();
		return false;
	}else if(!emailCheck(i)){
		return false;		
	}else{
		return true;
	}
}

function emailCheck(i) {
	txt=document.frmdatos.cor.value;
	if (txt.indexOf("@")<3){
		if(i==1){
			msn="La cuenta de correo es erronea, compruebe el prefijo y el signo '@'.";
		}else{
			msn="The mail account is wrong, check the prefix and the sign'@'.";
		}
		alert(msn);
		document.frmdatos.cor.focus();
		return false;
	}else{
		return true;
	}
}

var nav4 = window.Event ? true : false;
function solonumeros(evt){
	// NOTE: Backspace = 8, Enter = 13, '0' = 48, '9' = 57 
	var key = nav4 ? evt.which : evt.keyCode; 
	return (key <= 13 || key == 46 || (key >= 48 && key <= 57));
}	

function sololetras(oEvent) {
	var iKeyCode;
    if(document.all){
		iKeyCode = oEvent.keyCode;
    }else{
      iKeyCode = oEvent.which;
    }
    if(((iKeyCode > 47) && (iKeyCode < 58))){
		return false;
    }
}
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
	var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
	if ((x=MM_findObj(a[i]))!=null){
		document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];
	}
}
function alerta(msg){
	alert(msg);	
}