var lt = 1
var floz = 33.824;
var qt = 1.0570;
var gal = 0.2642;
var igal = 0.2200;
theform = document.volume;

function calibrate_Volume(theform)
{
	theform.lt.value=parseFloat(lt);
	theform.floz.value=parseFloat(floz);
	theform.qt.value=parseFloat(qt);
	theform.gal.value=parseFloat(gal);
	theform.igal.value=parseFloat(igal);	
}

function clear_Volume(theform)
{
	theform.lt.value="";
	theform.floz.value="";
	theform.qt.value="";
	theform.gal.value="";
	theform.igal.value="";
}

function check_Volume(theform)
{
	if(theform.lt.value == "" && theform.floz.value == "" && theform.qt.value == "" && theform.gal.value == "" && theform.igal.value == "")
	{
		alert("No value entered!");
	}
	else if (theform.lt.value != "" && theform.floz.value != "" && theform.qt.value != "" && theform.gal.value != "" && theform.igal.value != "")
	{
		//alert("heller");
	}
	else
	{
		compute_Volume(theform);
	}
}

function compute_Volume(theform)
{
	
	var lt_txt = document.volume.lt.value
	var floz_txt = document.volume.floz.value
	var qt_txt = document.volume.qt.value
	var gal_txt = document.volume.gal.value
	var igal_txt = document.volume.igal.value


	if (theform.lt.value != "")
	{
		lt_w = parseFloat(lt_txt);
		floz_w = lt_txt * floz;
		qt_w = lt_txt * qt;
		gal_w = lt_txt * gal;
		igal_w = lt_txt * igal;
	}

	else if (theform.floz.value != "")
	{
		lt_w = floz_txt / floz;
		floz_w = parseFloat(floz_txt);
		qt_w = lt_w * qt;
		gal_w = lt_w * gal;
		igal_w = lt_w * igal;
	}

	else if (theform.qt.value != "")
	{
		lt_w = qt_txt / qt;
		floz_w = lt_w * floz;
		qt_w = parseFloat(qt_txt);
		gal_w = lt_w * gal;
		igal_w = lt_w * igal;
	}

	else if (theform.gal.value != "")
	{
		lt_w = gal_txt / gal;
		floz_w = lt_w * floz;
		qt_w = lt_w * qt;
		gal_w = parseFloat(gal_txt);
		igal_w = lt_w * igal;
	}

	else if (theform.igal.value != "")
	{
		lt_w = igal_txt / igal;
		floz_w = lt_w * floz;
		qt_w = lt_w * qt;
		gal_w = lt_w * gal;
		igal_w = parseFloat(igal_txt);
	}

	else
	{
		alert("no result");
	}


		lt_w = Math.round(lt_w * 10000)/10000;
		floz_w = Math.round(floz_w * 10000)/10000;
		qt_w = Math.round(qt_w * 10000)/10000;
		gal_w = Math.round(gal_w * 10000)/10000;
		igal_w = Math.round(igal_w * 10000)/10000;

		theform.lt.value = parseFloat(lt_w);
		theform.floz.value = parseFloat(floz_w);
		theform.qt.value = parseFloat(qt_w);
		theform.gal.value = parseFloat(gal_w);
		theform.igal.value = parseFloat(igal_w);



}