cfa_ads_proxy_toggle.js

// this is a basic bookmarklet to simply CfA proxy use, 
// especially with the NASA ADS system. 
// (assuming one has a CfA PIN to log into the proxy)
//
// to make it a bookmarklet, run it through: 
// John Gruber's Bookmarklet-Builder
// http://daringfireball.net/2007/03/javascript_bookmarklet_builder
// OR
// http://subsimple.com/bookmarklets/jsbuilder.htm
//
// Cameron McBride
// cmcbride@cfa

var author = "Cameron McBride";
var email = "cmcbride@cfa";
var last_edit = "10 Feb 2012";
var proxy_host = ".ezp-prod1.hul.harvard.edu";

var re_pub   = /(adsabs.harvard.edu|iopscience.iop.org)/;
var re_proxy = new RegExp(proxy_host);

var url = location.href;

if(re_proxy.test(url)){
    url=url.replace(re_proxy,"");
    location.href=url;
}
else if(re_pub.test(url)){
    /* add proxy */
    url=url.replace(/\/([^\/]+)\//, "/$1" + proxy_host + "/");
    location.href=url;
}
else{
    alert("Current URL is not a known proxy!\nDoes not match:\n  " + re_pub);
}