$(document).ready(function(){
    $('a').hover(
	function(){
	    //hover in function
	    desc_p = $(this).attr("id")+ "_desc";
	    $("#"+desc_p).hide();
	    $("#description").html("<p id='"+ desc_p + "'>(" + $(this).attr("description") + ")</p>");
	    $("#"+desc_p).slideDown(200);
	},
	function(){
	    //hover out function
	    desc_p = $(this).attr("id") + "_desc";
	    $("#"+desc_p).slideUp(200);
	}
    )


})