function changecss(theClass,element,value) {
        //documentation for this script at
        //http://www.shawnolson.net/a/503/altering-css-class-attributes-with-javascript.html
        var cssRules;
 
        var added = false;
        for (var S = 0; S < document.styleSheets.length; S++){
 
    if (document.styleSheets[S]['rules']) {
          cssRules = 'rules';
        } else if (document.styleSheets[S]['cssRules']) {
          cssRules = 'cssRules';
        } else {
          //no rules found... browser unknown
        }
 
          for (var R = 0; R < document.styleSheets[S][cssRules].length; R++) {
           if (document.styleSheets[S][cssRules][R].selectorText == theClass) {
            if(document.styleSheets[S][cssRules][R].style[element]){
            document.styleSheets[S][cssRules][R].style[element] = value;
            added=true;
                break;
            }
           }
          }
          if(!added){
          if(document.styleSheets[S].insertRule){
                          document.styleSheets[S].insertRule(theClass+' { '+element+': '+value+'; }',document.styleSheets[S][cssRules].length);
                        } else if (document.styleSheets[S].addRule) {
                                document.styleSheets[S].addRule(theClass,element+': '+value+';');
                        }
          }
        }
        }
 
 
 //Original changecss script by Shawn Olson - http://www.shawnolson.net