Hi,

        I am new to Apex development and i have a problem which i am stuck on. I have a control on my APEX page which opens a new Popup window having all the contacts. This table has three columns checkboxes, Names and email ids. Now my problem is that when i click on the checkbox in the header of the table, all the checkboxs in the column should be selected. I have gone through many bolgs and didn't found any suitable approch to do this. Please help me here. Thanks in advance.