PageReference redirecting from the Visualforce page
if you are passing any parameters then you would use this:
<apex:outputLink value="{!URLFOR($Page.NewEmployee, null, [empId=e.Id])}"> e.Name </apex:outputLink>
If you want to add more parameters, you can add them in between the square brackets.
[empId=e.Id,id=URLENCODE($CurrentPage.Parameters.Id)]
Render IF-Else in the Visualforce page block lazyload loading