var usewgt;
var last;
var nlast;
// ********************************ST********************
function dechlorgc(g,l,ppm)
{
if (last!=1) {
	nlast=last;
	last=1;}
// liters
l=g * 3.785;
x=l.toFixed(3);
document.forms.dechlor.dechlorl.value=x;
	// wgt in grams
	gr=((g * .0038)  * (ppm * 7.4));
	gr=((g * .0038)  * (ppm)*3.49);
	x=gr.toFixed(3);
	if (isNaN(x)) {x=0;}
	document.forms.dechlor.dechlorgrams.value=x;
	// wgt in ounces
	x=(gr / 28.2875).toFixed(3);
	if (isNaN(x)) {x=0;}
	document.forms.dechlor.dechloro.value=x;
}
function dechlorlc(g,l,ppm)
{
if (last!=1) {
	nlast=last;
	last=1;}
// gallons
g=l / 3.785;
x=g.toFixed(3);
document.forms.dechlor.dechlorg.value=x;
	// wgt in grams
	gr=((g * .0038)  * (ppm)*3.49);
	x=gr.toFixed(3);
	if (isNaN(x)) {x=0;}
	document.forms.dechlor.dechlorgrams.value=x;
	// wgt in ounces
	x=(gr / 28.2875).toFixed(3);
	if (isNaN(x)) {x=0;}
	document.forms.dechlor.dechloro.value=x;
}
function dechlorppmc(g,l,ppm)
{
if (last!=3) {
	nlast=last;
	last=3;}
	// wgt in grams
	gr=((g * .0038)  * (ppm)*3.49);
	x=gr.toFixed(3);
	if (isNaN(x)) {x=0;}
	document.forms.dechlor.dechlorgrams.value=x;
	// wgt in ounces
	x=(gr / 28.2875).toFixed(3);
	if (isNaN(x)) {x=0;}
	document.forms.dechlor.dechloro.value=x;
}