var fDesc=new Array(); fDesc[0] = "The 3DEM application produces three dimensional terrain scenes and flyby animations from a wide variety of freely available data sources including:

- USGS - Digital Elevation Model (ASCII DEM) files
- USGS - Spatial Data Transfer Standard (SDTS DEM) files
- NASA - Shuttle Radar Topography Mission (SRTM) files
- LIDAR - Point Cloud (LAS) files
- USGS - Global 30 Arc Second Elevation Data Set (GTOPO30 DEM) files
- NOAA - Global Land One-km Base Elevation (GLOBE DEM) files
- NASA - Mars Orbiter Laser Altimeter (MOLA) files
- Any - topographic data file organized by rows and columns of elevation data
- XYZ - scattered point topographic data files"; 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 = ''; } }