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

function trimString(sInString) {
  sInString = sInString.replace( /^\s+/g, "" );// strip leading
  return sInString.replace( /\s+$/g, "" );// strip trailing
}

function validaConsulta(form){		
	if(document.filtros.txtAnio.value == "-1" && document.filtros.listDep.value == "-1" && document.filtros.listComis.value == "-1" &&document.filtros.listEstatus.value == "-1"  && document.filtros.noExp.value == "" && document.filtros.txtVotos.value == "-1" && document.filtros.txtFechaSesion.value == "" )
	{
			alert("Seleccione al menos un criterio de búsqueda ");
			document.filtros.noExp.focus();
			return false;	
	}
}