function Navegar(pagina){
	var form = document.getElementById("frm_navegar");
	form.action = pagina;
	form.submit();
}
function contactar(contacto,modo){
	var form = document.getElementById("frm_navegar");
	form.seleccion.value = contacto;
	form.action = "contacto.php";
	form.modo.value = modo;
	form.submit();
}
function ver_boletines(){
	var form = document.getElementById("frm_boletin");
	form.submit();
}
<!--
// Basado en el código:
//"Disable right mouse click Script
//By Maximus (maximus@nsimail.com) w/ mods by DynamicDrive
//For full source code, visit http://www.dynamicdrive.com"
 
var message="Funcion Deshabilitada!";
 
 
function iExplorer(){
if (event.button==2){
return false;
}
}
 
function netScape(e){
if (document.layers||document.getElementById&&!document.all){
if (e.which==2||e.which==3){
return false;
}
}
}
/* 
if (document.layers){
document.captureEvents(Event.MOUSEDOWN);
document.onmousedown=netScape;
}
else if (document.all&&!document.getElementById){
document.onmousedown=iExplorer;
}
 
document.oncontextmenu=new Function("return false")
 */
// -->