//para los popup
function AbrirCentro(url,nompopup,popW,popH,scroll,resizable){
	w = screen.availWidth;
	h = screen.availHeight;
	var leftPos = (w-popW)/2, topPos = (h-popH)/2;
	window.open(url,nompopup,'width=' + popW + ',height=' + popH + ',top=' + topPos + ',left=' + leftPos + ',resizable=' + resizable + ',scrollbars=' + scroll );
}

//For Numeric only checking
function fnIsNumeric(event)
{
	var KeyTyped = String.fromCharCode(event.keyCode);

	if(parseInt(KeyTyped.toString()) != KeyTyped.toString())
	{
		return false;
	}
	else
	{
		return true;
	}
}

function boletin()
{
	form = document.frmartek;	
	form.action="boletin.php";
	form.method="post";
	
	if (form.t_b.value=="")
	{	
		alert('Por favor ingrese su email');
		form.t_b.focus();		
	}	
	else if (! isValidEmail(form.t_b.value)) {
        alert("No es un email valido");
		form.t_b.focus();
        //return false;
    }		
	else {
		form.submit();
	}	
}

function myFocus(element) {
 if (element.value == element.defaultValue) {
   element.value = '';
 }
}
function myBlur(element) {
 if (element.value == '') {
   element.value = element.defaultValue;
 }
}

function entrar()
{
	form = document.frmartek;	
	form.action="login.php";
	form.method="post";
	
	if (form.id.value=="")
	{	
		alert('Debe ingresar su email, por favor');
		form.id.focus();
	}
	else if (! isValidEmail(form.id.value)) {
        alert("No es un email valido");
		form.id.focus();
        //return false;
    }	
	else if (form.password.value=="")
	{	
		alert('Debe ingresar su clave, por favor');
		form.password.focus();
	}
	else {form.submit();}	

}

function textCounter(field,cntfield,maxlimit) {
if (field.value.length > maxlimit) // if too long...trim it!
field.value = field.value.substring(0, maxlimit);
// otherwise, update 'characters left' counter
else
cntfield.value = maxlimit - field.value.length;
}

function isNumberKey(evt)
      {
         var charCode = (evt.which) ? evt.which : event.keyCode
         if (charCode > 31 && (charCode < 48 || charCode > 57))
            return false;

         return true;
      }