iPhone is suspended
<p>When I call <code>stringByEvaluatingJavaScriptFromString</code> to call a javascript method, iPhone is "suspended" (can not do any thing on iphone):</p>

<pre><code>NSString *_script = [[NSString alloc] initWithString: @"onTest()"];
[[NSString alloc] initWithString: [webView stringByEvaluatingJavaScriptFromString: _script]];
</code></pre>

<p>onTest() method is defined in local resource index.html.</p>

<p>Please tell me what is the reason?</p>
