function convertTemperature0(){
	var v = document.temperatureConverter0.temperature_v.value * 1;
	var units = document.temperatureConverter0.units;
	for (var i=0 ; i < units.length ; i++) { 
		if (units[i].checked) u = units[i].value;
	}
	var tc = new TemperatureConverter(u, v);
	alert(tc.cVs());
} 

function convertLength0(){
	var u; 
	var v = document.lengthConverter0.length_v.value;
	var units = document.lengthConverter0.units;
	for (var i=0 ; i < units.length ; i++) { 
		if (units[i].checked) u = units[i].value;
	}
	var lc = new LengthConverter(u, v);
	alert(lc.cVs());
}

function convertVolume0(){
	var u;                
	var v = document.volumeConverter0.volume_v.value;
	var units = document.volumeConverter0.units;
	for (var i=0 ; i < units.length ; i++) { 
		if (units[i].checked) u = units[i].value;
	}
	var vc = new VolumeConverter(u, v);
	alert(vc.cVs());
}

function convertVelocity0(){
	var u;                
        var v = document.velocityConverter0.velocity_v.value;
	var units = document.velocityConverter0.units;
	for (var i=0 ; i < units.length ; i++) { 
		if (units[i].checked) u = units[i].value;
	}
       	var vc = new VelocityConverter(u, v);
	alert(vc.cVs());
}

function convertPressure0(){
	var u; 
	var v = document.pressureConverter0.pressure_v.value;
	var units = document.pressureConverter0.units;
	for (var i=0 ; i < units.length ; i++) { 
		if (units[i].checked) u = units[i].value;
	}
        var pc = new PressureConverter(u, v);
        alert(pc.cVs());
}

function convertFlow0(){
	var u;
	var v = document.flowConverter0.flow_v.value;
	var units = document.flowConverter0.units;
	for (var i=0 ; i < units.length ; i++) { 
		if (units[i].checked) u = units[i].value;
	}
        var fc = new FlowConverter(u, v);
        alert(fc.cVs());
}

function rounding(n){
	var t = 1;
		if (n > 0.000001){
		if (n < 100) t = 10;
		if (n < 10) t = 100;
		if (n < 0.1) t = 10000;
		if (n < 0.01) t = 100000;
		if (n < 0.001) t = 1000000;
		if (n < 0.0001) t = 10000000;
		if (n < 0.00001) t = 100000000;
		return Math.round(n * t) / t;
	} else if (n < - 0.000001){
		if (n < - 0.00001) t = 100000000;
		if (n < - 0.0001) t = 10000000;
		if (n < - 0.001) t = 1000000;
		if (n < - 0.01) t = 100000;
		if (n < - 0.1) t = 10000;
		if (n < - 10) t = 100;
		if (n < - 100) t = 10;
		return Math.round(n * t) / t;
	} else {
		return n;
	}	
}