function DropDown(drop_id, size){
			createDropDown(drop_id,size);
			$("#drop_"+drop_id+" dt a").click(function() {
			if( $(".dropdown dd ul").is(':visible') ) {
			$(".dropdown dd ul").not("#drop_"+drop_id+" dd ul").hide();
			}
			$("#drop_"+drop_id+" dd ul").toggle();
			});
			$(document).bind('click', function(e) {
			var $clicked = $(e.target);
			if (! $clicked.parents().hasClass("dropdown"))
			$("#drop_"+drop_id+" dd ul").hide();
			});
			$("#drop_"+drop_id+" dd ul li a").click(function() {
			var text = $(this).html();
			$("#drop_"+drop_id+" dt a").html(text);
			$("#drop_"+drop_id+" dd ul").hide(); 
			var source = $("#"+drop_id+"");
			source.val($(this).find("span.value").html())
			});
		}
        function createDropDown(id,size){
			
			if(size == "big"){ var ac = ""; }else{ac = " date_drop";}
			
            var source = $("#"+id);
            var selected = source.find("option[selected]");
            var options = $("option", source);
            $("#contain_"+id).append('<dl id="drop_'+id+'" class="dropdown'+ac+'"></dl>')
            $("#drop_"+id).append('<dt><a href="javascript:void(0)">' + selected.text() + 
                '<span class="value">' + selected.val() + 
                '</span></a></dt>')
            $("#drop_"+id).append('<dd><ul></ul></dd>')
            options.each(function(){
                $("#drop_"+id+" dd ul").append('<li><a href="javascript:void(0)">' + 
                    $(this).text() + '<span class="value">' + 
                    $(this).val() + '</span></a></li>');
            });
        }