Hi all,

While using the latest version of Mootools I noticed that my Java Applets 
werent working. After closer inspection I managed to identify the problem to 
a single line within the code the was causing the issue:

this.Document = document.$constructor = new Type('Document', function(){});

This is from line 153 in the 
Browser.js<https://github.com/mootools/mootools-core/blob/master/Source/Browser/Browser.js#L153>file.
 Strange as it looks but simply including the variable "this.Document = 
'string';" wil prevent Java Applets from loading when you have the following 
versions of Java installed (Tested with IE 7 and Windows XP):

   - JRE 6.0 Update 7
   - JRE 6.0 Update 6
   - JRE 6.0 Update 5
   - JRE 6.0 Update 4
   [Due to time constraints JRE 6.0 to JRE 6.0 Update 3 were not tested]
   - JRE 5.0 Update 22
   [Due to time constraints JRE 5.0 Update 16 to JRE 5.0 Update 21 were not 
   tested]
   - JRE 5.0 Update 15
   [Due to time constraints JRE 5.0 Update 1 to JRE 5.0 Update 14 were not 
   tested]
   - JRE 5.0

The following HTML demonstrates this problem when you have any of the above 
versions of Java installed:

<html>
    <head>
        <title>Java Bug</title>
        <script type="text/javascript" language="javascript">
            this.Document = 'string'; // Remove this line to get it to work 
again
        </script>
    </head>
    <body style="background-color:black">
        <applet id="testVM" alt="Something is wrong. Java is not working." 
            codebase="http://www.java.com/applet"; 
code="testJava2_1/TestVMApplet" 
            archive="TestVM2-test.jar" width="500" height="280">
            <param name="locale" value="en" />    
            <param name="titleSize" value="22" />
            <param name="subtitleSize" value="18" />    
            <param name="scriptable" value="false">
        </applet>
    </body>
</html>

In light of the issue would the Mootools team be willing to change the 
variable name to something else?

I have also creted an issue about this here:
https://github.com/mootools/mootools-core/issues/84

Thanks

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