pass asp.net control id to a javascript function

hi,
I had few linkbuttons.i need to call a javascript function  on a linkbutton click .i need to send the clicked linbutton id as input parameter to the javascript function.my code is below
<asp:LinkButton ID="lbtnWelcome" PostBackUrl="..aspx"  OnClientClick="return changeColor(this);" runat="server" CssClass="linkbutton"
                    Text="Welcome"></asp:LinkButton>&nbsp;&nbsp;|&nbsp;&nbsp;
<asp:LinkButton ID="lbtnHome" PostBackUrl="...aspx" OnClientClick="return changeColor(this);" runat="server" CssClass="linkbutton"
                    Text="Home"></asp:LinkButton>


my java ...