Try this:
$(document).ready(function(){
$("#onclick").each(function(){
var className = this.attr('class');
var contName = this.closest('td').next('#response_proj').attr('class');
$(className).jqm({trigger:contName, toTop: true })
})
})
Frankly speaking, I think the better way is to use data-id and class attributes(without id):
<a href='' class='onclick' data-id='".$row->dId."'>".$row->dName."</a>
And access id via
var id = $('.onclick').data('id');