var fDesc=new Array(); fDesc[0] = "The propeller Design program computes propeller performance, using various design and off-design methods, from standard Gawn and Wageningen B-series propeller charts or propeller data input by the user. Data for Kaplan propellers operating in nozzles are also provided. The program provides a rapid means of designing a propeller or investigating the influence on performance and efficiency of various design parameteres."; 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 = ''; } }