Use "lp" as default graph options when axes already drawn

Author: linev

scripts/JSRootPainter.more.js

@@ -814,11 +814,11 @@
 
    TGraphPainter.prototype.DecodeOptions = function(opt) {
 
+      if (!opt) opt = this.main_painter() ? "lp" : "alp";
+
       if ((typeof opt == "string") && (opt.indexOf("same ")==0))
          opt = opt.substr(5);
 
-      if (!opt && !this.main_painter()) opt = "alp";
-
       var graph = this.GetObject(),
           d = new JSROOT.DrawOptions(opt);