var fDesc=new Array(); fDesc[0] = "MICRODEM is a freeware microcomputer mapping program written by Professor Peter Guth of the Oceanography Department, U.S. Naval Academy. It requires a 32 bit version of Windows (NT/2000/XP or 95/98/ME). You may freely use MICRODEM with no restrictions.

MICRODEM displays and merges

- digital elevation models
- satellite imagery
- scanned maps
- vector map data
- GIS databases

From sources such as:

- US Geological Survey
- National Imagery and Mapping Agency
- Census Bureau
- National Ocean Survey
- British Ordnance Survey
- Landsat TM
- SPOT"; 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 = ''; } }