Set default view for Partylist or Lookup field in CRM 2011 using javascript.

function lookforuser()
{
document.getElementById("to").setAttribute("lookuptypes", "8");// set as user view
document.getElementById("to").setAttribute("defaulttype", "8");
//Copy the ID of View
Xrm.Page.getControl("to").setDefaultView("FCFB3A47-6760-E211-BACF-00155D000B45");
}