1  <HTML>
  2  <HEAD>
  3  <TITLE>JavaScript Example: Background color</TITLE>
  4  
  5  <SCRIPT LANGUAGE="JavaScript">
  6  <!-- hide script from old browsers
  7  
  8  var isWhite = true;
  9  
 10  function setBackground() {
 11    if ( isWhite ) {
 12      document.bgColor = "pink";
 13      isWhite = false;
 14    } else {
 15      document.bgColor = "white";
 16      isWhite = true;
 17    }
 18  }
 19  
 20  // end script hiding -->
 21  </SCRIPT>
 22  
 23  </HEAD>
 24  
 25  <BODY BGCOLOR="white">
 26  
 27  <CENTER>
 28  <FORM>
 29    <INPUT TYPE="button" VALUE="Toggle Background Color" 
 30           onClick="setBackground()">
 31  </FORM>
 32  </CENTER>
 33  
 34  </BODY>
 35  </HTML>