hi all, i have a multiple select drop down which has the following values 1.All (Users) 2.User1 3.User2 4.User3 now what i want to do is when i select "All" then the other values i.e a.User1,User2,User3,should automatically get selected. b.If i select All and then any other User then i should show the user that u have selected All already,so cant select other users Plz reply soon,me in trouble. Thanx in Advance.
For the record, there is no HTML multi-select drop-down. There is only the multi-select list box. If you are getting the "drop-down" functionality in a select, then it isn't multi-select. As for the "All" option, you will have to put an onChange() event handler in your <SELECT> tag. This event will be fired when the user selects/deselects an option in your list box. From there you will have to write some logic to determine if "All" has been selected or if it was already selected. If it was chosen then you can force the selection of all the available options. If it was already selected and the user chooses something else, you can then return false from your function, cancelling the change event.