/*
  http://www.faqts.com/knowledge_base/view.phtml/aid/2147/fid/128
  ONCLICK="getStyleClass('aStyleClass').style.display = 'block';"
  ONCLICK="getStyleClass('aStyleClass').style.display = 'none';"
*/

function getStyleClass ( className ) {
    for (var s = 0; s < document.styleSheets.length; s++)
    {
        if(document.styleSheets[s].rules)
        {
            for (var r = 0; r < document.styleSheets[s].rules.length; r++)
            {
                if (document.styleSheets[s].rules[r].selectorText == '.' + className)
                {
                    return document.styleSheets[s].rules[r];
                }
            }
        }
        else if(document.styleSheets[s].cssRules)
        {
            for (var r = 0; r < document.styleSheets[s].cssRules.length; r++)
            {
                if (document.styleSheets[s].cssRules[r].selectorText == '.' + className)
                    return document.styleSheets[s].cssRules[r];
            }
        }
    }
    
    return null;
}