Grid data losing

[Appu]

Hi
      I am using Rad grid, i have one problem in applying widget skin, all of the other skins are working fine. I planed to use Widget skin for make a good look and feel for HeaderContextMenu. But once i add widget skin to my page the result is only first grid row item i could saw, remaining items are vanished. It occures only after i added Widget skin for my Menu. Here i am giving list of skins i using:

 <link href="Skins/Gray/Calendar.Gray.css" rel="stylesheet" type="text/css" />
    <link href="Skins/Gray/ComboBox.Gray.css" rel="stylesheet" type="text/css" />
    <link href="Skins/Gray/Input.Gray.css" rel="stylesheet" type="text/css" />
    <link href="Skins/Gray/Grid.Gray.css" rel="stylesheet" type="text/css" />
    <link href="Skins/Gray/Menu.Gray.css" rel="stylesheet" type="text/css" />
    <link href="Skins/Gray/Dock.Gray.css" rel="stylesheet" type="text/css" />
    <link href="Skins/Gray/Widgets.Gray.css" rel="stylesheet" type="text/css" />
      <link href="Skins/Gray/PanelBar.Gray.css" rel="stylesheet" type="text/css" />
       <link href="Skins/Gray/Window.Gray.css" rel="stylesheet" type="text/css" />

I am giving my Div styles like below: I placed grid inside of Div and set the width of Grid to 100% and gave the columns accrording to fixed width.
  <div style="margin-top: 0px; height: 200px; width: 1500px">



regards,
Appu