Hide status bar of Link button

Hide status bar of link button 
We have use the below code to disable status bar of link button in IE, can't in FireFox. 
 
<asp:LinkButton ID="lnkbutn" onMouseOver="window.status='';" onMouseOut="window.status='';"  
oncontextmenu="window.status='';" runat="server" Visible="false"  
OnClick="lnkbutn_click"> >> Next </asp:LinkButton>