function calc(){
 OSS=document.form1.OSS.selectedIndex * 1680;
 OSM=document.form1.OSM.selectedIndex * 3045;
 OSL=document.form1.OSL.selectedIndex * 6825;
 CSS=document.form1.CSS.selectedIndex * 1680;
 CSM=document.form1.CSM.selectedIndex * 3045;
 CSL=document.form1.CSL.selectedIndex * 6825;
 ESS=document.form1.ESS.selectedIndex * 1680;
 ESM=document.form1.ESM.selectedIndex * 3045;
 ESL=document.form1.ESL.selectedIndex * 6825;
 SPS=document.form1.SPS.selectedIndex * 1890;
 SPM=document.form1.SPM.selectedIndex * 3570;
 SPL=document.form1.SPL.selectedIndex * 7245;
 PCG=document.form1.PCG.selectedIndex * 1890;
 OHP=document.form1.OHP.selectedIndex * 1995;
 CHP=document.form1.CHP.selectedIndex * 1995;
 SHT=document.form1.SHT.selectedIndex * 1995;
 POS=document.form1.POS.selectedIndex * 1050;
document.form1.output.value=OSS+OSM+OSL+CSS+CSM+CSL+ESS+ESM+ESL+SPS+SPM+SPL+PCG+OHP+CHP+SHT+POS;
 }