function chclass() {
browser_name = navigator.appName; 
if (browser_name == 'Opera') 
{ 
document.getElementById('search').className = "input_search2" ; 
document.getElementById('textarea').className = "textarea2" ; 
}
else if (browser_name =='Netscape') 
{ 
document.getElementById('search').className = "input_search2" ; 
document.getElementById('textarea').className = "textarea2" ; 
}
}