Calling apex function

Could we access the webservice objects within javascript too? for example this:

global&nbsp;class&nbsp;TestInvocable<br />{<br />&nbsp;&nbsp;&nbsp;global&nbsp;class&nbsp;DispatchInfo&nbsp;<br />&nbsp;&nbsp;&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;webservice&nbsp;Date&nbsp;dispatchDate;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;webservice&nbsp;String&nbsp;shippingCompany;<br />&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;webservice&nbsp;static&nbsp;String&nbsp;testInvocableMethod(DispatchInfo&nbsp;dispatch)<br />&nbsp;&nbsp;&nbsp;&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;System&#46;debug('Dispatch&nbsp;info');<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;System&#46;debug('date:&nbsp;'&nbsp;+&nbsp;dispatch&#46;dispatchDate);<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;System&#46;debug('shipping&nbsp;company:&nbsp;'&nbsp;+&nbsp;dispatch&#46;shippingCompany);<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;'Ok';<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />}

I need to access the ‘DispatchInfo’ object within my code snippet. I tried doing something like this:

var dipatchInfo = sforce&#46;Xml('DispatchInfo'); 


but this doesnt work as dipatchInfo was always undefined. Any help on this would be appreciated. Thanks.