$("#id").multiSelect({ oneOrMoreSelected: '*',selectAll:false,noneSelected:'默认显示' });
Usage: $('#id').multiSelect( options, callback )
Options: selectAll - whether or not to display the Select All option; true/false, default = true
selectAllText - text to display for selecting/unselecting all options simultaneously
noneSelected - text to display when there are no selected items in the list
oneOrMoreSelected - text to display when there are one or more selected items in the list
(note: you can use % as a placeholder for the number of items selected).
Use * to show a comma separated list of all selected; default = '% selected'
optGroupSelectable - whether or not optgroups are selectable if you use them; true/false, default = false
listHeight - the max height of the droptdown options