document.write("<span class='prev'>");document.write("<a href='show/?");document.write("52.html");document.write("'>Prev: ");document.write("патент");document.write("</a>");document.write("</span><span class='next'>");document.write("<a href='show/?");document.write("50.html");document.write("'>Next: ");document.write("Сертификат&nbsp;оценки");document.write("</a>");document.write("</span>");