JavaScript Validation Question

function Click()
{
var grid = $find("");
var selectedUniqueNames = "";
var gridSelectedItems = grid.get_masterTableView().get_selectedItems();
for (var i=0; i 0)
{
var x = confirm(selectedUniqueNames);
if (x)
{
return true;
}
else
{
return false;
}
}
}

I have a form that has a grid underneith it which has a checkbox for each row.  The form has an oncick and onclientclick event.  I want the onclick ...