Change color of a table cell WHERE the table is in the user control

Question

Hi all, I am new to C#, I have a user control which contain the Table(which is a menu bar of a web site on the left) The question is:- The User control is a Table with a list of menu name with a link attached to it. so when I click on a link, it will just link me to attached link page a.) I need to know how to change the color of table cell(makes the table cell remains highlighted with a certain color) when I click on the certain link. So when I reach the destination page the user control will show which link have being clicked..??? b.) How to control the attributes of labels, change things, do things within a user control??? Please HELP.... things