add:      if (extHash) { params[extName][Hash] = extHash; } 
context: function install( aEvent, extName, iconURL)  {       if (aEvent.target.href.match(/^.+\.xpi$/)) {        var params = new Array();        params[extName] = {            URL: aEvent.target.href,            IconURL: iconURL,            toString: function () { return this.URL; }        };        InstallTrigger.install(params);        try {            var p = new XMLHttpRequest();            p.open("GET", "/install.php?uri="+aEvent.target.href, true);            p.send(null);        } catch(e) { }        return false;    }}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/bdc8829bb3aaaa6f65f5716a90c63366d59e4b93/install.js/clean/webtools/addons/public/htdocs/js/install.js