var spellSearch = new SOAPCall();
var spellTerm = new SOAPParameter();
spellTerm.value = words; //words is the user input
spellTerm.name = "phrase";

spellSearch.encode(0, "doSpellingSuggestion", "urn:GoogleSearch",
0, null, 2, new Array(key, spellTerm));

var suggestion = spellSearch.invoke();