jQuery Grid Plugin - jqGrid

Hi,

I planned to give all date strings that are in the past a red color and all other ones the default one (black). So my attempt was on creating a custom formatter that works as a hook to the date formatter (currently without date comparison):

deadline_formatter = function (cellval, opts){
    var newdate = $.fmatter.util.DateFormat("Y-m-d",cellval,"d.m.Y",$.jgrid.formatter.date); 
    return "<span style=\\"color:red\\">"+newdate+"</span>";
}

This works for me and shows all dates in red color. But when I enable field editing the edittype "text" with the value "<span ..." is used. Inside the formatter plugin code I found out that the "date" formatter accepts a third parameter called "act" that will be of value "edit" on edit process. I cannot see any hookup possibilty for custom formatters to get rid of an active edit process. The only way I can think of how to overcome this is to manually replace the field value inside the onSelectRow callback...

Is there another way to get the things done to me?

Greetings.