title: Drawing rectangles on a grid in a web browser
body: <p>I would like to create an online, simple WYSIWYG drawing editor allowing people to draw rectangular shapes. I'm thinking of a grid which the lines and points can snap on to, ensuring that the lines are strictly vertical or horizontal.
  I will be parsing the rectangular shapes to obtain some area calculations and compute certain things. 
  How can I achieve the drawing ability? The new canvas tag is good but people have been telling me that IE does not support it. I found some Java applets but I have never programmed in Java before. Is there a way to do this using pure javascript or jquery? Does ASP.NET help at all? </p>
  
  <p>Thanks.</p>