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

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

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

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