Fix MathJax.js URL to work with Windows. Resolves issue mathjax#70.

Author: dpvc

lib/mj-page.js

@@ -28,6 +28,7 @@
 var http = require('http');
 var fs = require('fs');
 var path = require('path');
+var url = require('url');
 var fmt = require('util').format;
 var jsdom = require("jsdom").jsdom;
 var exec = require('child_process').exec;
@@ -74,7 +75,10 @@ var STATE = {
   BUSY:    4           // MathJax currently processing math
 };
 
-var MathJaxPath = "file://"+require.resolve('MathJax/unpacked/MathJax');
+//
+// The MathJaxPath is normaized against file:/// so that Windows paths are correct
+// 
+var MathJaxPath = url.resolve("file:///","file:"+require.resolve('MathJax/unpacked/MathJax'));
 var BatikRasterizerPath = path.resolve(__dirname,'..','batik/batik-rasterizer.jar');
 var MathJaxConfig;                 // configuration for when starting MathJax
 var MathJax;                       // filled in once MathJax is loaded

lib/mj-single.js

@@ -29,6 +29,7 @@
 var http = require('http');
 var fs = require('fs');
 var path = require('path');
+var url = require('url');
 var fmt = require('util').format;
 var jsdom = require('jsdom').jsdom;
 var exec = require('child_process').exec;
@@ -73,7 +74,10 @@ var STATE = {
   BUSY:    4           // MathJax currently processing math
 };
 
-var MathJaxPath = "file://"+require.resolve('MathJax/unpacked/MathJax');
+//
+// The MathJaxPath is normaized against file:/// so that Windows paths are correct
+// 
+var MathJaxPath = url.resolve("file:///","file:"+require.resolve('MathJax/unpacked/MathJax'));
 var BatikRasterizerPath = path.resolve(__dirname,'..','batik/batik-rasterizer.jar');
 var MathJaxConfig;                   // configuration for when starting MathJax
 var MathJax;                         // filled in once MathJax is loaded