问cordova混合应用软导航栏覆盖了我在bootom上的菜单栏

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<preference name="permissions"                value="none"/>

<!-- Customize your app and platform with the preference element. -->
<preference name="orientation"                value="default" />        <!-- all: default means both landscape and portrait are enabled -->
<preference name="target-device"              value="universal" />      <!-- all: possible values handset, tablet, or universal -->
<preference name="fullscreen"                 value="true" />           <!-- all: hides the status bar at the top of the screen -->
<preference name="webviewbounce"              value="true" />           <!-- ios: control whether the screen 'bounces' when scrolled beyond the top -->
<preference name="prerendered-icon"           value="true" />           <!-- ios: if icon is prerendered, iOS will not apply it's gloss to the app's icon on the user's home screen -->
<preference name="stay-in-webview"            value="false" />          <!-- ios: external links should open in the default browser, 'true' would use the webview the app lives in -->
<preference name="ios-statusbarstyle"         value="black-opaque" />   <!-- ios: black-translucent will appear black because the PhoneGap webview doesn't go beneath the status bar -->
<preference name="detect-data-types"          value="true" />           <!-- ios: controls whether data types (such as phone no. and dates) are automatically turned into links by the system -->
<preference name="exit-on-suspend"            value="false" />          <!-- ios: if set to true, app will terminate when home button is pressed -->
<preference name="show-splash-screen-spinner" value="true" />           <!-- ios: if set to false, the spinner won't appear on the splash screen during app loading -->
<preference name="auto-hide-splash-screen"    value="true" />           <!-- ios: if set to false, the splash screen must be hidden using a JavaScript API -->
<preference name="disable-cursor"             value="false" />          <!-- blackberry: prevents a mouse-icon/cursor from being displayed on the app -->
<preference name="android-installLocation"    value="auto" />           <!-- android: app install location. 'auto' will choose. 'internalOnly' is device memory. 'preferExternal' is SDCard. -->

var ref = cordova.InAppBrowser('http://apache.org', '_blank', 'toolbar=no');