function email(sEPrefix,sHPrefix,sHSuffix,sLinkText) {
 document.write("<a href=" + "mail" + "to:" + sEPrefix + "%40" + sHPrefix + "." + sHSuffix + ">" + sLinkText + "</a>")
}
function show_hide(element,sState) {
var b = navigator.appName;
if (b!=="Microsoft Internet Explorer") 
  {
  document.getElementById(element).style.visibility = sState; 
  }
}