/*tranquil marine 

www.tranquilmarine.com.au
*/
function tmsvolcalc()
{
	var tanklen = $('length');
	var tankwid = $('width');
	var tankhei = $('height');
	var tankvol = $('volume');
	
	if (tanklen != null
		&& tankwid != null
		&& tankhei != null
		&& tankvol != null)
	{
		if (tanklen.value.length == 0
			|| tankwid.value.length == 0
			|| tankhei.value.length == 0)
		{
			tankvol.value = "Need length, heigh and width";
			return false;
		}
		
		if (tanklen.value != parseFloat(tanklen.value))
		{
			tankvol.value = "Length - Numbers Only Please";	
			return false;
		}
		if (tankwid.value != parseFloat(tankwid.value))
		{
			tankvol.value = "Width - Numbers Only Please";	
			return false;
		}
		if (tankhei.value != parseFloat(tankhei.value))
		{
			tankvol.value = "Height - Numbers Only Please";	
			return false;
		}
		
		var w = parseFloat(tankwid.value);
		var h = parseFloat(tankhei.value);
		var l = parseFloat(tanklen.value);
		
		var tot = w * h * l / 1000;
		
		tankvol.value = tot.toString() + " Litres";
		
	}


}

function tmsftcm()
{
	var ft = $('feet');
	var cm = $('centimeters');
	
	if (ft != null
		&& cm != null)
	{
		if (ft.value.length == 0)
		{
			cm.value = "Need Feet";
			return false;
		}
		
		if (ft.value != parseFloat(ft.value))
		{
			cm.value = "Numbers Only Please";	
			return false;
		}
		
		var f = parseFloat(ft.value);
		
		cm.value = f * 30.48;
		
	}

}