document.write("<option value=\"1943.html\">Halogen studio lamps</option> "); document.write("<option value=\"1944.html\">Halogen lamps with special bases</option> "); document.write("<option value=\"1945.html\">Low-voltage halogen lamps without reflectors 1</option> "); document.write("<option value=\"1946.html\">Halogen lamps,medium/high voltage,single-ended</option> "); document.write("<option value=\"1947.html\">Mains voltage halogen lamps</option> "); document.write("<option value=\"1948.html\">Halogen lamps,double-ended</option> "); document.write("<option value=\"1950.html\">Low-voltage halogen lamps without reflectors</option> "); document.write("<option value=\"1973.html\">Halogen lamps,current controlled,single-ended</option> "); document.write("<option value=\"1974.html\">Halogen lamps,current-controlled,with PK30d base</option> ");