+function getInitialProofCheckerURL()
+{
+ var search = top.location.search;
+ search = search.slice(1);
+ var args = search.split("&");
+ var proofcheckerURL = "-1";
+ for (var i = 0 ; i < args.length ; i++) {
+ var couple = args[i].split("=");
+ if (couple[0] == "proofcheckerURL") proofcheckerURL = couple[1];
+ }
+ if (proofcheckerURL == "-1")
+ proofcheckerURL = getDefaultParam("proofcheckerURL");
+ return proofcheckerURL;
+}
+