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var hmContextIds = new Array();
function hmGetContextId(query) {
var urlParams;
var match,
pl = /\+/g,
search = /([^&=]+)=?([^&]*)/g,
decode = function (s) { return decodeURIComponent(s.replace(pl, " ")); },
params = {};
while (match = search.exec(query))
params[decode(match[1])] = decode(match[2]);
if (params["contextid"]) return decodeURIComponent(hmContextIds[params["contextid"]]);
else return "";
}