function Abrir (URL)
{
    window.open(URL,"NuevaVentana","scrollbars=yes, menubar=no, location=no, resizable=yes") 
} 

 function Validar(resObj) {
	
	var tmp="";
	for (j=0; j<resObj.value.length; j++)
		if ((resObj.value.charAt(j)>="0") && (resObj.value.charAt(j)<="9")) {
			tmp=tmp+resObj.value.charAt(j);
	}
		
	if (tmp=="") {
		tmp="0";
		newRes=0;
		resObj.value="";
	} else {
		//newRes=parseInt(tmp);
		newRes=tmp;
		resObj.value=newRes;	
	}		
}