function mudaCursor(event, Form1)
{   
    var keyCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
    var numCaracteres = document.Form1.txtDDD.value.length;
    if(numCaracteres==2) {
    if ((event.keyCode>43)&&(event.keyCode<58) || (event.keyCode>95)&&(event.keyCode<107)){ 
	     document.Form1.txtNumero.focus();
	     }else{return false;}
	}else{return false;}
}