Pdf Calculation Problem

[admin]

I am trying to create an order form in Adobe Acrobat PDF format. This code seems to be close, but not quite there. Can anyone help?

var f = this.getField ("TOTAL");
if (f.value=0.00<20.00)(event.value=5.95);"or";
if (f.value=20.01<50.00)(event.value=7.95);"or";
if (f.value=50.01<75.00)(event.value=9.95);"or";
if (f.value=75.01<100.00)(event.value=11.95);"or";
if (f.value=100.01<150.00)(event.value=13.95);"or";
if (f.value=150.01<200.00)(event.value=15.95);"or";
if (f.value=200.01<250.00)(event.value=17.95);"or";
if (f.value>250.01)(event.value=20.95);

Thanks!!