var fDesc=new Array(); fDesc[0] = "The Power Prediction program calculates the powering requirements of vessels covering a large range of hull forms from merchant ships to planing vessels, using a variety of analytical and regression methods. The program can calculate the effect of appendages and the effect of changes in hull form parameters. In addition to calculating the resistance and EHP, the program also calculates the propulsive coefficients for each speed."; 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 = ''; } }