Add hover-over text for course codes on the DCS Course page

hover-dcs-codes.js

javascript:(function(){
var h3s = document.getElementsByTagName("h3");
var codes = {};
for (var i = 0; i < h3s.length; i++) 
{
  var splits = h3s[i].textContent.split(" - ");
  if(splits.length == 2)
  {
    codes[splits[0].trim()] = splits[1].trim();
  }
}
codes["JSC270H1"] = "Data Science I";
codes["MAT137Y1"] = "Calculus";
codes["MAT157Y1"] = "Analysis I";
codes["MAT223H1"] = "Linear Algebra I";
codes["MAT224H1"] = "Linear Algebra II";
codes["MAT235Y1"] = "Calculus II";
codes["MAT237Y1"] = "Multivariable Calculus";
codes["MAT240H1"] = "Algebra I";
codes["MAT247H1"] = "Algebra II";
codes["MAT257Y1"] = "Analysis II";
codes["MAT329Y1"] = "Concepts in Elementary Mathematics";
codes["MAT390H1"] = "History of Mathematics up to 1700";
codes["MAT391H1"] = "History of Mathematics after 1700";
codes["STA130H1"] = "An Introduction to Statistical Reasoning and Data Science";
codes["STA248H1"] = "Statistics for Computer Scientists";
codes["STA257H1"] = "Probability and Statistics I";
codes["STA261H1"] = "Probability and Statistics II";
codes["STA314H1"] = "Statistical Methods for Machine Learning I";
codes["STA347H1"] = "Probability";
codes["STA414H1"] = "Statistical Methods for Machine Learning II";
var as = document.getElementsByTagName("a");
for (var i = 0; i < as.length; i++) 
{
  if(as[i].textContent in codes)
  {
    as[i].title = codes[as[i].textContent];
  }
}
})();