function ShowPopup()
{
var popupURL = "popacc.htm";
var popup = window.open(popupURL,"Popacc",'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=420,height=410');
if( navigator.appName.substring(0,8)=="Netscape"){popup.location = popupURL;}
}
function calcacc(form,val,index)
//converts accelerations, BCK,Aug.7,2001
{                               //input:
if(index==0) v=val;             // m s-2 (base)
if(index==1) v=val/100.;        // cm s-2
if(index==2) v=val*0.3048;      // ft s-2
if(index==3) v=val*0.0254;      // in s-2
if(index==4) v=val/3.6;         // km h-1 s-1
if(index==5) v=val/3.6*1.60934  // mi h-1 s-1
if(index==6) v=val/1.296e7;     // m h-2
if(index==7) v=val*9.80665;     // g's
                       // output:
form.ms2.value=ausgab(v);            // m s-2 (base)
form.cms.value=ausgab(v*100);          // cm s-2
form.fts.value =ausgab(v/0.3048);      // ft s-2     
form.ins.value=ausgab(v/0.0254);       // in s-2     
form.khs.value=ausgab(v*3.6);          // km h-1 s-1 
form.mhs.value=ausgab(v*3.6/1.60934);  // mi h-1 s-1 
form.mh2.value=ausgab(v*1.296e7);      // m h-2      
form.gra.value=ausgab(v/9.80665);      // g's
}