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;}}}}