Hello! I need some JS-scripts to address a UnimMemo. I use Form->Script: Ext.form.TextArea.prototype.deleteAtCursor = function(txt) {     var val = this.getValue(),         start = this.inputElement.dom.selectionStart,         end = this.inputElement.dom.selectionEnd;     this.setValue(val.substring(0, start - 1) + val.substring(end));     this.inputElement.dom.selectionStart = this.inputElement.dom.selectionEnd = start - 1;     Ext.defer(function() { this.focus(false); }, 10);