function getDifference(var1, var2)
{
	if (var1 == NaN || var2 == NaN)
	{
		return false;
	}
	/*return (Math.pow(Math.pow(var1, 2), 0.5) + Math.pow(Math.pow(var2, 2), 0.5));*/
	return (var1+var2)*(-1);
}

function getDifIntern(var1, var2)
{
	return Math.pow(Math.pow(var1, 2), 0.5) + Math.pow(Math.pow(var2, 2), 0.5);
}

function getParabelProgVars(distance, steps)
{
	if (distance % 2 != 0)
	{
		distance += 1;
	}
	var tmp		= new Array();
	var count	= 0;
	var factor	= 0;
	
	factor		= (distance/2)/((steps/2)*(steps/2));
	
	//y = ax^2
	//a = factor
	for (var i = 1; i <= steps/2; i++)
	{
		tmp[count] = factor*(i*i);
		count++;
	}
	
	for (i =  1; i < steps/2; i++)
	{
		tmp[i + steps/2] = distance/2 + tmp[i];
		count++;
	}
	return tmp.reverse();
}