function MM_validateForm() { //v4.0
  if (document.getElementById){
    var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
    for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=document.getElementById(args[i]);
      if (val) { nm=val.name; if ((val=val.value)!="") {
        if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
          if (p<1 || p==(val.length-1)) errors+='- Ingrese un '+nm+' correcto.\n';
        } else if (test!='R') { num = parseFloat(val);
          if (isNaN(val)) errors+='- '+nm+' debe contener un numero.\n';
          if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
            min=test.substring(8,p); max=test.substring(p+1);
            if (num<min || max<num) errors+='- Ingrese un '+nm+' entre '+min+' y '+max+'.\n';
      } } } else if (test.charAt(0) == 'R') errors += '- Ingrese un '+nm+'.\n'; }
    } if (errors) alert('Por favor:\n'+errors);
    document.MM_returnValue = (errors == '');
} }

function reload() {
	var val=document.getElementsByName("Categoria")[0].options[document.getElementsByName("Categoria")[0].options.selectedIndex].value;
	self.location='?cat='+val;
}

function upload() {
	document.form.submit();
}