function do_mail_to(to_name, domain_name, show_link, class_name)
{
    document.write("E-mail: <a href='mailto:");
    document.write(to_name);
    document.write("@");    
    document.write(domain_name);
    document.write("'");
    document.write(" class='" + class_name + "'>");
    if(show_link!='')
    {
    	document.write(show_link);
    }
    else
    {
	    document.write(to_name);
    	document.write("@");    
	    document.write(domain_name);
    }
    document.write("</a>");
}