function ClearInput(form) 
{
form.dimensionL.value="";
form.dimensionW.value="";
form.stage.value="";
form.screen.value="";
form.aisles.value="";
form.theater.value="";
form.school18.value="";
form.banquet72.value="";
return true;
}


function SizeCalc(form) 
{
var dimensionL = 0;
var dimensionW = 0;
var stage = 0;
var screen = 0;
var aisles = 0;
var theater = 0;
var school18 = 0;
var banquet72 = 0;
var Warea = 0;
var Larea = 0;
var Screenarea = 0;
var StageArea = 0;
var TotalLength = 0;
var TotalWidth = 0;
var SquareFootage = 0;
var BanquetFootage = 0;
var BanquetW = 0;
var BanquetL = 0;
var AislesArea = 0;

dimensionL = form.dimensionL.value
dimensionW = form.dimensionW.value
stage = form.stage.value
screen = form.screen.value
aisles = form.aisles.value
theater = form.theater.value
school18 = form.school18.value
banquet72 = form.banquet72.value


AislesArea = aisles * 6
ScreenArea = (screen * 1.5) + 5
StageArea = stage * 1
Larea = dimensionL - 12 - AislesArea
Warea = dimensionW - 16
BanquetW = dimensionL - 12 
BanquetL = dimensionW - 16 - ScreenArea - StageArea
BanquetFootage = BanquetW * BanquetL

TotalLength = Warea - StageArea - ScreenArea
TotalWidth = Larea * 1

SquareFootage = TotalLength * TotalWidth


form.theater.value = SquareFootage / 6;
form.school18.value = SquareFootage / 11;
form.banquet72.value = BanquetFootage / 10;
return true;
}