$( "#dialog-form" ).dialog({ autoOpen: false, height: 200, width: 450, dialogClass: "dialog", modal: true, open: function(event, ui) { $(".ui-dialog-titlebar-close").hide(); }, -> 'x' button display none buttons: { "cancel":function() { alert('cancle event'); $( this ).dialog( "close" ); } }, close: function() { $(".spm-input").val(""); } }); *** open: function(event, ui) { $(".ui-dialog-titleba..