http://dhtmlx.com/docs/products/kb/index.php?s=normal&q=10879&a=17774 The combobox queries the server too quickly. Is there a way to configure a delay so that it doesnt query the server until after 500 milliseconds after there is no more typing? Thanks, Chris Hello, combo doesn't provide a ready solution to do that. But you can try to modify dhtmlxcombo.js, line 667 as follows (but this solution isn't supported) if (this._filter) return this.filterSelf((ev==8)||(ev==46)); replace with var self=this; var km = (ev==8)||(ev==46); if (self._suggest) clearTimeout(self._suggest); self._suggest = setTimeout(function(){ if (self._filter) return self.filterSelf(km); },500) ########################### Add this to the css to remove the images on the drop downs /* dont show pulldown on comboboxes */ img.dhx_combo_img { display: none; }