var table='c1'; function combo(table) { if (table=='c1') { if (document.all.c1.style.visibility=="hidden") { document.all.c1.style.visibility="visible"; } else {document.all.c1.style.visibility="hidden";} } if (table=='c2') { if (document.all.c2.style.visibility=="hidden") { document.all.c2.style.visibility="visible"; } else {document.all.c2.style.visibility="hidden";} } if (table=='c3') { if (document.all.c3.style.visibility=="hidden") { document.all.c3.style.visibility="visible"; } else {document.all.c3.style.visibility="hidden";} } }