function calci(varr,c)
{
	var p = document.new.a1.value;
	var i = document.new.a2.value;

	if(!isNaN(p) && !isNaN(i))
	{
	   document.new.res.value = Math.round((p/(i*i))*1000)/1000;
	}
	else
	{
		if(isNaN(p)){
			p = p.substring(0,p.length-1);
			document.new.a1.value=p;
		}
		if(isNaN(i)){
			i = i.substring(0,i.length-1);
			document.new.a2.value=i;
		}
	}
}
function calci1(varr,c)
{
	var e = document.new1.a1.value;
	var p = document.new1.a2.value;

	if(!isNaN(e) && !isNaN(p))
	{
	   document.new1.res.value = Math.round(((e*e)/p)*1000)/1000;
	}
	else
	{
		if(isNaN(e)){
			e = e.substring(0,e.length-1);
			document.new1.a1.value=e;
		}
		if(isNaN(p)){
			p = p.substring(0,p.length-1);
			document.new1.a2.value=p;
		}
	}
}
function calci2(varr,c)
{
	var e = document.new2.a1.value;
	var i = document.new2.a2.value;

	if(!isNaN(e) && !isNaN(i))
	{
	   document.new2.res.value = Math.round((e/i)*1000)/1000;
	}
	else
	{
		if(isNaN(e)){
			e = e.substring(0,e.length-1);
			document.new2.a1.value=e;
		}
		if(isNaN(i)){
			i = i.substring(0,i.length-1);
			document.new2.a2.value=i;
		}
	}
}