function computePrice()
{
	var an1 = parseInt(document.getElementById('t1'));
	var an2 = parseInt(document.getElementById('t2'));
	var an3 = parseInt(document.getElementById('t3'));
	var an4 = parseInt(document.getElementById('t4'));
	var a1=0
	var a2=0
	var a3=0
	var a4=0
	var a=0
	var af=0
	var d=0
	var an = an1+an2+an3+an4;
	d = Math.floor(an/50)*0.005;
	if(d>0.1)
	{
		d=0.1
	}
	if (!isNaN(an1))
	{
		a1=an1*48000
	}
	if (!isNaN(an2))
	{
		a2=an2*55000
	}
	if (!isNaN(an3))
	{
		a3=an3*65000
	}
	if (!isNaN(an4))
	{
		a4=an4*70000
	}
	a=a1+a2+a3+a4;
	af =a*d;

	if(isNaN(a1))
	{
		price1.innerText = 0;
	}
	else
	{
		price1.innerText = a1;
	}
	if(isNaN(a2))
	{
		price2.innerText = 0;
	}
	else
	{
		price2.innerText = a2;
	}
	if(isNaN(a3))
	{
		price3.innerText = 0;
	}
	else
	{
		price3.innerText = a3;
	}
	if(isNaN(a4))
	{
		price4.innerText = 0;
	}
	else
	{
		price4.innerText = a4;
	}
	if(isNaN(a))
	{
		price.innerText = 0;
	}
	else
	{
		price.innerText = a;
	}
	if(isNaN(af))
	{
		discount.innerText = 0;
	}
	else
	{
		discount.innerText = (Math.floor(af));
	}
	if(isNaN(a-af))
	{
		total.innerText = 0;
	}
	else
	{
		total.innerText = (Math.floor(a-af));
	}
}