SyntaxError: missing variable name (httpunit;

[Anonymous]

I am getting the following error on logon to a asp page. It has two text [for username and password] and a input type=image for submit the page.
*******
SyntaxError: missing variable name (httpunit; line 828)
        at org.mozilla.javascript.NativeGlobal.constructError(NativeGlobal.java:590)
        at org.mozilla.javascript.TokenStream.reportSyntaxError(TokenStream.java:663)
        at org.mozilla.javascript.TokenStream.reportCurrentLineError(TokenStream.java:641)
        at org.mozilla.javascript.Parser.reportError(Parser.java:81)
        at org.mozilla.javascript.Parser.mustMatchToken(Parser.java:72)
        at org.mozilla.javascript.Parser.variables(Parser.java:905)
        at org.mozilla.javascript.Parser.statementHelper(Parser.java:793)
        at org.mozilla.javascript.Parser.statement(Parser.java:445)
        at org.mozilla.javascript.Parser.parseFunctionBody(Parser.java:176)
        at org.mozilla.javascript.Parser.function(Parser.java:281)
        at org.mozilla.javascript.Parser.parse(Parser.java:129)
        at org.mozilla.javascript.Context.compile(Context.java:2005)
        at org.mozilla.javascript.Context.compileString(Context.java:922)
        at org.mozilla.javascript.Context.evaluateString(Context.java:778)
        at com.meterware.httpunit.javascript.JavaScript$JavaScriptEngine.executeScript(JavaScri
pt.java:122)
        at com.meterware.httpunit.scripting.ScriptableDelegate.runScript(ScriptableDelegate.jav
a:64)
        at com.meterware.httpunit.parsing.ScriptFilter.getTranslatedScript(ScriptFilter.java:15
0)
        at com.meterware.httpunit.parsing.ScriptFilter.endElement(ScriptFilter.java:131)
        at org.cyberneko.html.filters.DefaultFilter.endElement(Unknown Source)
        at org.cyberneko.html.filters.NamespaceBinder.endElement(Unknown Source)
        at org.cyberneko.html.HTMLTagBalancer.callEndElement(Unknown Source)
        at org.cyberneko.html.HTMLTagBalancer.endElement(Unknown Source)
        at org.cyberneko.html.HTMLScanner$SpecialScanner.scan(Unknown Source)
        at org.cyberneko.html.HTMLScanner.scanDocument(Unknown Source)
        at org.cyberneko.html.HTMLConfiguration.parse(Unknown Source)
        at org.cyberneko.html.HTMLConfiguration.parse(Unknown Source)
        at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
        at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
        at com.meterware.httpunit.parsing.NekoHTMLParser.parse(NekoHTMLParser.java:41)
        at com.meterware.httpunit.HTMLPage.parse(HTMLPage.java:244)
        at com.meterware.httpunit.WebResponse.getReceivedPage(WebResponse.java:1014)
        at com.meterware.httpunit.WebResponse$Scriptable.load(WebResponse.java:611)
        at com.meterware.httpunit.javascript.JavaScript$Window.initialize(JavaScript.java:424)
        at com.meterware.httpunit.javascript.JavaScript.run(JavaScript.java:80)
        at com.meterware.httpunit.javascript.JavaScriptEngineFactory.associate(JavaScriptEngine
Factory.java:46)
        at com.meterware.httpunit.RequestContext.runScripts(RequestContext.java:44)
        at com.meterware.httpunit.WebWindow.getResponse(WebWindow.java:119)
        at com.meterware.httpunit.WebWindow.updateWindow(WebWindow.java:141)
        at com.meterware.httpunit.WebWindow.getSubframeResponse(WebWindow.java:127)
        at com.meterware.httpunit.WebWindow.getResponse(WebWindow.java:118)
        at com.meterware.httpunit.WebWindow.sendRequest(WebWindow.java:107)
        at com.meterware.httpunit.WebRequestSource.submitRequest(WebRequestSource.java:245)
        at com.meterware.httpunit.WebRequestSource.submitRequest(WebRequestSource.java:224)
        at com.meterware.httpunit.WebForm.doFormSubmit(WebForm.java:75)
        at com.meterware.httpunit.WebForm.submit(WebForm.java:67)
        at Sample_1.main(Sample_1.java:41)
*******

The form is validated against a page that has javascript functions.
Please help and let me know if you want more information.