var fDesc=new Array(); fDesc[0] = "This program is a tool for stretching a bitmap image (a raster image), trimming it to a box, and calibrating it. This is primarily of use when dealing with a scanned image of a paper map. Often when making a scan it is hard to get the image precisely aligned; sometimes with old maps the paper has stretched. It can be useful where you want to make a tiled map from a number of original images. The program can also be useful when dealing with maps of an unknown projection because the map can be stretched to fit another coordinate system."; 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 = ''; } }