title: revealing text within a webpage on link
body: <p>is there a simple way to reveal text within a webpage using a link without altering the web address or using an iframe? maybe with an 'onclick' function? im pretty new to new code so not sure where to start.. ive attached a picture of what exaclty im after, fairly simple. im already using an iframe as the main interface so another one would get messy in terms of a default menu. there must be a simple fix.. any help would be really appreciated. 
  thanks, Aaron <br/><br/></p>
  
  <p><img src="https://i.stack.imgur.com/ZUfOE.jpg" alt="enter image description here"></p>