var fDesc=new Array(); fDesc[0] = "Is a special application to calculate projection distance and projection size for Mitsubishi Electric projectors. Simply choose the desired model, lens and unit, then enter a value in a box to calculate the following: distance between projector and screen, required screen dimensions, and the appropriate distance of the screen from the floor or ceiling. Values can be displayed in inches and feet and in centimeters."; 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 = ''; } }