var fDesc=new Array(); fDesc[0] = "The POSTNET barcode is a special barcode developed by the US Post Office to encode address information and facilitate automated sorting of US Mail. Postnet Barcode is commonly seen just below the address of delivered mail. There are several different standards used where the most popular is the DPBC Postnet Barcode recognized by its 62 bars."; 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 = ''; } }