// Конверсия: масса - моли (для белков)

var chk;
var chk1=true;
var chk2=true;
var chk3=true;
var chk4=true;
var n1=0; 
var n2=0; 
var n3=0; 
var n4=0;
var q1=0; 
var m2=0; 
var c3=0; 
var m4=0;
function res()
{
n1=0; 
n2=0; 
n3=0; 
n4=0;
chk1=true;
chk2=true;
chk3=true;
chk4=true;
q1=0; 
m2=0; 
c3=0; 
m4=0;
}
function helpp()
{
	var hlp;
switch (lng) {
	case "eng":
	hlp="/eng/scripts/h01_04.html";
	break;
	case "rus":
	hlp="/scripts/h01_04.html";
	break;
	default:
	break;
	}
window.open(hlp,'help', config='height=500,width=540,toolbar=yes,menubar=yes,scrollbars=yes,resizable=yes,location=yes,status=yes');
self.name="main window"
}
function Mrec()
{
if(chk1==0){conv1()};
if(chk2==0){conv2()};
if(chk3==0){conv3()};
if(chk4==0){conv4()};
}
function Mi()
{
chk=true;
M = parseFloat(document.prot.M.value.replace(/,/g,".")); 
if(isNaN(M)||M==0){alert(alt04_01); document.prot.M.focus(); return true;};
M =  Math.abs(M);
document.prot.M.value=M+"kDa"
chk=false;
}
function conv1()
{
Mi(); 
if(chk){return true};
m1=parseFloat(document.prot.m1.value.replace(/,/g,".")); 
if(isNaN(m1)||m1==0){alert(alt04_02); document.prot.m1.focus(); return true;};
m1 =  Math.abs(m1)
q1=m1/Math.pow(10,3*document.prot.Dm1.selectedIndex)/M/1000;
q1sh=Math.round(q1*6.022045*Math.pow(10,23));
n=0;
	while(n<6&&q1<1) {n++; q1 = q1*1000};
	n1=n;
	r=Math.round(q1*100)/100;
	if(r>0){q1=r};
	document.prot.m1.value=m1;
	document.prot.q1.value=q1;
	document.prot.q1sh.value=q1sh;
	document.prot.Dq1.selectedIndex=n;
	chk1=false;
}
function rclc1()
{
if(chk1){alert(alt04_03); return true};
document.prot.q1.value = q1*Math.pow(10,3*document.prot.Dq1.selectedIndex)/Math.pow(10,3*n1);
}
function conv2()
{
Mi(); 
if(chk){return true};
q2=parseFloat(document.prot.q2.value.replace(/,/g,".")); 
if(isNaN(q2)||q2==0){alert(alt04_04); document.prot.q2.focus(); return true;};
q2 =  Math.abs(q2)
q2sh=Math.round(q2*6.022045*Math.pow(10,23))/Math.pow(10,3*document.prot.Dq2.selectedIndex);
m2=q2/Math.pow(10,3*document.prot.Dq2.selectedIndex)*M*1000;
n=0;
	while(n<5&&m2<1) {n++; m2 = m2*1000};
	n2=n;
	r=Math.round(m2*100)/100;
	if(r>0){m2=r};
	document.prot.q2.value=q2;
	document.prot.m2.value=m2;
	document.prot.q2sh.value=q2sh;
	document.prot.Dm2.selectedIndex=n;
	chk2=false;
}
function rclc2()
{
if(chk2){alert(alt04_05); return true};
document.prot.m2.value = m2*Math.pow(10,3*document.prot.Dm2.selectedIndex)/Math.pow(10,3*n2);
}
function conv3()
{
Mi(); 
if(chk){return true};
m3=parseFloat(document.prot.m3.value.replace(/,/g,".")); 
if(isNaN(m3)||m3==0){alert(alt04_02); document.prot.m3.focus(); return true;};
m3 =  Math.abs(m3)
v3=parseFloat(document.prot.v3.value.replace(/,/g,".")); 
if(isNaN(v3)||v3==0){alert(alt04_07); document.prot.v3.focus(); return true;};
v3 =  Math.abs(v3)
c3=m3*Math.pow(10,3*document.prot.Dv3.selectedIndex)/v3/M/1000/Math.pow(10,3*document.prot.Dm3.selectedIndex)
n=0;
	while(n<6&&c3<1) {n++; c3 = c3*1000};
	n3=n;
	r=Math.round(c3*100)/100;
	if(r>0){c3=r};
	document.prot.m3.value=m3;
	document.prot.v3.value=v3;
	document.prot.c3.value=c3;
	document.prot.Dc3.selectedIndex=n;
	chk3=false;
}
function rclc3()
{
if(chk3){alert(alt04_08); return true};
document.prot.c3.value = c3*Math.pow(10,3*document.prot.Dc3.selectedIndex)/Math.pow(10,3*n3);
}
function conv4()
{
Mi(); 
if(chk){return true};
c4=parseFloat(document.prot.c_4.value.replace(/,/g,".")); 
if(isNaN(c4)||c4==0){alert(alt04_09); document.prot.c_4.focus(); return true;};
c4 =  Math.abs(c4)
v4=parseFloat(document.prot.v4.value.replace(/,/g,".")); 
if(isNaN(v4)||v4==0){alert(alt04_07); document.prot.v4.focus(); return true;};
v4 =  Math.abs(v4)
m4=c4/Math.pow(10,3*document.prot.Dc4.selectedIndex)*v4/Math.pow(10,3*document.prot.Dv4.selectedIndex)*M*1000
n=0;
	while(n<5&&m4<1) {n++; m4 = m4*1000};
	n4=n;
	r=Math.round(m4*100)/100;
	if(r>0){m4=r};
	document.prot.c_4.value=c4;
	document.prot.v4.value=v4;
	document.prot.m4.value=m4;
	document.prot.Dm4.selectedIndex=n;
	chk4=false;
}
function rclc4()
{
if(chk4){alert(alt04_11); return true};
document.prot.m4.value = m4*Math.pow(10,3*document.prot.Dm4.selectedIndex)/Math.pow(10,3*n4);
}