I want to declare associative array in the argument of function in - is it possible??

this code it's not working..

<a href=javascript:functionName(new Array('cool'=>'Mustang','family'=>'Station'))>click</a>

that code is working - is it the only way?

<script>

    var my_cars= new Array()

    my_cars[cool]=Mustang;

    my_cars[family]=Station;

</script>



<a href=javascript:functionName(my_cars)>click</a>