//CSS change
if(navigator.appName=="Netscape") {
	document.write('<link rel="stylesheet" type="text/css" href="' + directory + 'common/css/nn.css">');
}else if (navigator.appName=="Microsoft Internet Explorer"){
	document.write('<link rel="stylesheet" type="text/css" href="' + directory + 'common/css/ie.css">');
}


//history back
function pageback1(){
	history.back();
	return false;
}