var NN, IE;

if (navigator.appVersion.charAt(0)>="4")
{
        if (navigator.appName=="Netscape")
        {
                NN=true;
        }
        else 
        if (navigator.appVersion.indexOf("MSIE")!=-1)
        {
                IE=true;
        }
}

if (document.URL.indexOf("About") !=-1){
//	layer_ps('sm2', 'Top', '180');
//	layer_ps('smbg2', 'Top', '180');
	layer_ps('smln', 'Top', '182');
}

function layer_in(lyr)
{
 var str1, str2;
 
 if (NN){
 	str1="document.sm"+lyr+".visibility='visible'";
 	str2="document.smbg"+lyr+".visibility='visible'";
	document.smln.visibility='visible';
 }

 if (IE){
 	str1="document.all.sm"+lyr+".style.visibility='visible'";
 	str2="document.all.smbg"+lyr+".style.visibility='visible'";
	document.all.smln.style.visibility='visible';
 }

 eval(str1);
 eval(str2);
}

function layer_out(lyr)
{
 var str1, str2;
 
 if (NN){
 	str1="document.sm"+lyr+".visibility='hidden'";
 	str2="document.smbg"+lyr+".visibility='hidden'";
	document.smln.visibility='hidden';
 }

 if (IE){
 	str1="document.all.sm"+lyr+".style.visibility='hidden'";
 	str2="document.all.smbg"+lyr+".style.visibility='hidden'";
	document.all.smln.style.visibility='hidden';
 }
 
 eval(str1);
 eval(str2);
}

function layer_ps(lyr,pos,dif)
{
 var str; 

 if (NN){
 	str="document."+lyr+"."+pos+"="+dif;
 }

 if (IE){
 	str="document.all."+lyr+".style.pixel"+pos+"="+dif;
 }
 
 eval(str);
}