Cookie grows to result in 'Bad Request'

When I use:

var tbl = "gridTable";
var date = new Date();
var expires = "; expires=" + date.toGMTString();

grid.attachEvent("onResizeEnd", function(obj) { 
   grid.saveSizeToCookie("MyCookie-" + tbl, expires); 

I can see a cookie appearing with name ‘gridSettingsMyCookie-gridTable’ when I resize the grid. This is as expected. But there’s also, on every resize, a cookie created with a name like ‘gridSettingsdhxGridObj_QDWQ12smEi1DWwdd’. I have a database table editor (using v3.0 Pro) and my cookie space get’s full so at one time a request delivers ‘Bad Request’ on the server because of a too big request header.

Can you please tell me how we can solve this?

Thanks in advance,

It cannot be fixed with JavaScript because of each browser has it’s on cookies size limit.