$(document).ready(function () {
        //Init Details Dialog
        $("#detailsPage").dialog({
            bgiframe: true, autoOpen: false, modal: true,
            buttons: {
                    "Fertig": function (){ $(this).dialog("close");}
                    }
        });
}

somewhere i got onclick="detailsPage(this.name)";

function detailsPage(id) {
$(".details").remove();
if($("#hiddenInput").val() != id){
    //Filling up the div
    $.getJSON("files/scripts/GetJSON_Drinks.php?action=" + id, function( Obj ) {
                                makeDetailsTable(Obj.aaData[0]);
                                                                                                        });
$('#hiddenInput').val(id);
}
else
  $("#detailsPage").dialog('open');
}

function makeDetailsTable(detailsArray) {
    for(index in detailsArray){
        $('#detail'+index).append('<td class="details">'+detailsArray[index]+'</td>');
    }
    $("#detailsPage").dialog('open');
}