document.writeln("<option value=\"57.021464@C\">Carbamidomethyl (C)</option>\n");
document.writeln("<option selected value=\"\">No further mods</option>\n");
document.writeln("<option value=\"none\">Unmodified</option>\n");
document.writeln("<option value=\"57.021464@C,10.008269@R,8.014199@K\">Cam+SILAC (8@K,10@R)</option>\n");
document.writeln("<option value=\"57.021464@C,4.025107@K,6.020129@R\">Cam+SILAC (4@K,6@R)</option>\n");
document.writeln("<option value=\"57.021464@C,4.025107@K,6.020129@R,6.020129@L\">Cam+SILAC (4@K,6@R,6@L)</option>\n");
document.writeln("<option value=\"442.224991@C\">ICAT-D (C)</option>\n");
document.writeln("<option value=\"450.275205@C\">ICAT-D:2H(8) (C)</option>\n");
document.writeln("<option value=\"227.126991@C\">ICAT-C (C)</option>\n");
document.writeln("<option value=\"236.157185@C\">ICAT-C:13C(9) (C)</option>\n");
document.writeln("<option value=\"58.005479@C\">Carboxymethyl (C)</option>\n");
document.writeln("<option value=\"105.057849@C\">Pyridylethyl (C)</option>\n");
document.writeln("<option value=\"71.037114@C\">Propionamide (C)</option>\n");
document.writeln("<option value=\"144.102063@[,144.102063@K\">iTRAQ (N-term,K)</option>\n");
document.writeln("<option value=\"57.021464@C,144.102063@[,144.102063@K\">Cam + iTRAQ (C,N-term,K)</option>\n");
document.writeln("<option value=\"57.021464@C,224.152478@K,224.152478@[\">Cam + TMT (C,K,nt)</option>\n");
document.writeln("<option value=\"57.021464@C,225.155833@K,225.155833@[\">Cam + TMT2plex (C,K,nt)</option>\n");
document.writeln("<option value=\"57.021464@C,229.1629328@K,229.1629328@[\">Cam + TMT6plex (C,K,nt)</option>\n");
