[jQuery] Intelligence not working

[Muhammad Arif]

Hello All:
             I am using JQuery if in a page i used only
<script src="JQuery/jquery-1.2.6.js" type="text/javascript"></script>
<script  type="text/javascript">
$(document).ready(function()
{
alter("Working on Intelligence");
}
);
</script>
then its working fine...

 but when i add another script file below it so its intelligence is
not working

e.g

<script src="JQuery/jquery-1.2.6.js" type="text/javascript"></script>
<script src="JQuery/ui.datepicker.js" type="text/javascript"></script>
<script src="JQuery/ui.core.js" type="text/javascript"></script>
<script  type="text/javascript">
$(document).ready(function()
{
alter("Working on Intelligence");
}
);

so in this case the intelligence is not working.. if i remove or
comment the 2 script file which i have added to then its working
fine.. other wise not working..

can you please help me in this regards