function k6 () {
    window.alert ("This icon signifies a link to KINDERGARTEN - 6TH GRADE (PRE-ALGEBRA) mathematics");
  }
  
  function hs () {
    window.alert ("This icon signifies a link to HIGH SCHOOL mathematics");
  }
  
  function ld () {
    window.alert ("This icon signifies a link to LOWER DIVISION COLLEGE mathematics");
  }
  
  function ud () {
    window.alert ("This icon signifies a link to UPPER DIVISION COLLEGE mathematics");
  }
  
  function gp () {
    window.alert ("This icon signifies a link to GRADUATE AND PROFESSIONAL mathematics");
  }
  
  function jva () {
    window.alert ("This icon signifies pages enhanced by JAVA");
  }
  
  function interAct () {
    window.alert ("This icon signifies other types of INTERACTIVE pages");
  }
  
  function img () {
    window.alert ("This icon signifies pages with many IMAGES");
  }
  
  function mov () {
    window.alert ("This icon signifies pages containing ANIMATIONS or MOVIES");
  }
  
  function lnks () {
    window.alert ("This icon signifies pages with a significant collection of LINKS to other sites");
  }