var fDesc=new Array(); fDesc[0] = "MasSim is a mass spectrometer simulator ideal for education and research. This program simulates the functioning of a real mass spectrometer. Three modes are provided, browser, student, and instructor. In browser mode, spectra may be browsed, manipulated, annotated, and printed. In instructor mode, spectra can be prepared for students use, including addition of simulated molecular ion peaks and renaming (to disguise chemical names). Features include the ability to paste bitmaps and text onto the spectra, insertion of labels (m/z, intensity, or both) added automatically by setting of an intensity threshold and calculation and optional labeling of peak differences. Also, it includes an isotope calculator and an interface which allows importing spectra from the NIST/EPA Mass Spectral Database."; 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 = ''; } }