replace the usage of [selected], attr and removeAttr to :selected and jQuery.prop
replace the usage of [selected], attr and removeAttr to :selected and jQuery.prop

The changes are required to support jQuery 1.6 and higher. Thanks @ Luca7993 (https://github.com/Luca7993) to pointing to the problem. See https://github.com/free-jqgrid/jqGrid/pull/260

javapark/jqgrid