SET AND GET VALUE FROM LOOKUP TO LOOKUP USING JAVASCRIPT IN MSCRM 2011 , 2013

function lookuptolookup() {

    //want the code to run only when some one update form click here to know about FORM TYPE

    var formtype = Xrm.Page.ui.getFormType();

    if (formtype == 2) {

        //look have the values " 1.id 2. name 3. entity type " so need to be in array

        var lookup = new Array();

        lookup = Xrm.Page.getAttribute( "new_test5_lookup" ).getValue();

        if (lookup != null) {

            var name = lookup[0].name;

            var id = lookup[0].id;

            var entityType = lookup[0].entityType;

        }

        var lookup1 = new Array();

        lookup1[0] = new Object();

        lookup1[0].id = id;

        lookup1[0].name = name;

        lookup1[0].entityType = entityType;

        //set value of lookup2 same as look up 1

        Xrm.Page.getAttribute( "new_test_5_lookup_2" ).setValue(lookup1);

    }

}