var fDesc=new Array(); fDesc[0] = "IP Subnet Calculator allows you to compute subnetting information. You can type any IP address and the program will classify the IP automatically. The main window contains four tabs: Address Info, Subnet Info, Subnet/Hosts and CIDR. In the Address Info tab you can select address types from class A, B, C, and D, showing the range of IP addresses, and the binary, and hexadecimal equivalents of addresses entered. It includes a color-coded class bit map that shows the role of bits in the address class (also shows the Ethernet multicast address for class D addresses only); Subnet Info tab allows you to determine the number of subnet bits to use when creating the subnet mask by selecting subnet, mask bits, subnet mask, max subnets, max and hosts per subnet, showing the subnet bit map, host address range, ID, and broadcast. The Subnet/Hosts tab shows the information of the current IP address scheme showing all the range of IPs, their ID, range, and broadcast. The CIDR tab(Classless Inter Domain Routing) allows you to select mask bits, super net mask, max super nets, and max addresses, showing the route and super net address range."; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }