function clickButton(e, buttonid) { 
      var bt = document.getElementById(buttonid); 
      if (typeof bt == 'object') { 
            if (navigator.appName.indexOf("Netscape")>(-1)) { 
                  if (e.keyCode == 13) { 
                        bt.click(); 
                        return false; 
                  } 
            } 
            if (navigator.appName.indexOf("Microsoft Internet Explorer")>(-1)) { 
                  if (event.keyCode == 13) { 
                        bt.click(); 
                        return false; 
                  } 
            } 
      }
} 



function clickHyperlink(e, buttonid) { 
      var bt = document.getElementById(buttonid); 
      if (typeof bt == 'object') { 
            if (navigator.appName.indexOf("Netscape")>(-1)) { 
                  if (e.keyCode == 13) { 
                        eval(bt.href);
                        return false; 
                  } 
            } 
            if (navigator.appName.indexOf("Microsoft Internet Explorer")>(-1)) { 
                  if (event.keyCode == 13) { 
                        eval(bt.href);
                        return false; 
                  } 
            } 
      }
}