// Конверсия площади

var chk2=true;
var D2=0;
var n2=0;
D2v=new Array(1000000, 1, 0.0001, 0.000001, 10000, 100, 4046.86, 0.00064516, 2589988, 2590000, 0.09290304, 0.8361274);
switch (lng) {
	case "eng":
D2n=new Array("km2", "m2", "cm2", "mm2", "hectare [ha]", "are [are] (US)", "acre [a]", "sq. inch [in2]", "sq. mile", "sq. mile (stat.)", "sq. foot [ft2]", "sq. yard [yd2]");
	break;
	case "rus":
D2n=new Array("km2", "m2", "cm2", "mm2", "гектар [ha]", "ар [are] (US)", "акр [a]", "кв. дюйм [in2]", "кв. миля", "кв. миля (уств.)", "кв. фут [ft2]", "кв. ярд [yd2]");
var alt08_01 = "Нужно ввести число в нижнюю графу.";
	break;
	default:
	break;
	}

function res2()
{D2=0;
n2=0;
chk2=true;}

function insert2()
{
chk2=true;
n2 = parseFloat(document.dim2.n.value.replace(/,/g,".")); 
if(isNaN(n2)){alert(alt08_01); document.dim2.n.focus(); return true;};
D2 = document.dim2.D.selectedIndex
n2 = Math.abs(n2);
document.dim2.na.value=n2+D2n[D2];
chk2=false;
}

function insertN2()
{
if(chk2){return true};
insert2()
}

function calc2()
{
if(chk2){return true};
Da = document.dim2.D.selectedIndex;
n_new=n2*D2v[D2]/D2v[Da];
document.dim2.n.value =n_new; 
}