[Name] prepareddialogid [Required] false [Type] ECMAScript Expression [Default Value] none [Valid Values] a valid dialogid [Description] An ECMAScript expression which returns a dialog identifier of a dialog previously prepared by the execution of a dialogprepare element. If the specified dialog identifier refers to an unknown dialog or a dialog that has already been executed, by way of another dialogstart element, an error.dialogwrongstate event must be thrown. [Attribute Constraints] 
This attribute must not be specified in conjunction with the src, type or namelist attributes.