<script language="JavaScript">


function Roman() {
var Num=document.NumF.Num.value;
var MvC=0
var MvC2=0
var MvX=0
var MvX2=0
var MvI=0
var MvI2=0
var Mvalue=""
var MV1=1000
var DV1=500
var MoreMs=0
var MoreV=""
//Start Big Loop!!
while(Num >= MV1) {
Num=Num - MV1
MoreMs++
}
if(MoreMs >= 4) {
while(MoreMs >= 1000) {
MoreMs=MoreMs - 1000
MoreV+="M"
}
if(MoreMs >= 900 && MoreMs < 1000) {
MoreMs=MoreMs - 900
MoreV+="CM"
}
while(MoreMs >= 500 && MoreMs < 1000) {
MoreMs=MoreMs - 500
MoreV+="D"
}
if(MoreMs >= 400 && MoreMs < 500) {
MoreMs=MoreMs - 400
MoreV+="CD"
}
while(MoreMs >= 100 && MoreMs < 500) {
MoreMs=MoreMs - 100
MoreV+="C"
}
if(MoreMs >= 90 && MoreMs < 100) {
MoreMs=MoreMs - 90
MoreV+="XC"
}
if(MoreMs >= 40 && MoreMs < 50) {
MoreMs=MoreMs - 40
MoreV+="XL"
}
while(MoreMs >= 50 && MoreMs < 100) {
MoreMs=MoreMs - 50
MoreV+="L"
}
if(MoreMs >= 9 && MoreMs < 10) {
MoreMs=MoreMs - 9
MoreV+="IX"
}
while(MoreMs >= 10 && MoreMs < 50) {
MoreMs=MoreMs - 10
MoreV+="X"
}
if(MoreMs == 9) {
MoreMs=MoreMs - 9
MoreV+="IX"
}
while(MoreMs >= 5 && MoreMs < 10) {
MoreMs=MoreMs - 5
MoreV+="V"
}
if(MoreMs == 4) {
MoreMs=MoreMs - 4
MoreV+="IV"
}
if(MoreMs == 3) {
MoreV+="I"
MoreMs--
}
if(MoreMs == 2) {
MoreV+="I"
MoreMs--
}
if(MoreMs == 1) {
MoreV+="I"
MoreMs--
}
}
if(MoreMs == 3) {
Mvalue+="M"
MoreMs--
}
if(MoreMs == 2) {
Mvalue+="M"
MoreMs--
}
if(MoreMs == 1) {
Mvalue+="M"
MoreMs--
}

while(Num < MV1 &&  Num >= DV1) {
if(Num >= 900) {
Mvalue+="CM"
Num=Num - 900
}
else if(Num < 900 && Num >= DV1) {
Num=Num - DV1
Mvalue+="D"
}
}
while(Num < 500 && Num >= 100) {
Num=Num - 100
MvC2++
}

if(MvC2 == 4) {
Mvalue+="CD"
}
if(MvC2 == 3) {
Mvalue+="C"
MvC2--
}
if(MvC2 == 2) {
Mvalue+="C"
MvC2--
}
if(MvC2 == 1) {
Mvalue+="C"
MvC2--
}


while(Num < 100 && Num >= 50) {
if(Num >= 90) {
Mvalue+="XC"
Num=Num - 90
}
else if(Num < 90 && Num >= 50) {
Num=Num - 50
Mvalue+="L"
}
}
while(Num < 50 && Num >= 10) {
Num=Num - 10
MvX2++
}
if(MvX2 == 4) {
Mvalue+="LX"
}
if(MvX2 == 3) {
Mvalue+="X"
MvX2--
}
if(MvX2 == 2) {
Mvalue+="X"
MvX2--
}
if(MvX2 == 1) {
Mvalue+="X"
MvX2--
}
if(Num == 9) {
Mvalue+="IX"
Num=Num - 9
}
while(Num < 10 && Num >= 5) {
if(Num <= 8 && Num >= 5) {
Num=Num - 5
Mvalue+="V"
}
}
while(Num < 5 && Num >= 1) {
Num=Num - 1
MvI2++
if(MvI2 == 4) {
Mvalue+="IV"
}
}
if(MvI2 == 3) {
Mvalue+="I"
MvI2--
}
if(MvI2 == 2) {
Mvalue+="I"
MvI2--
}
if(MvI2 == 1) {
MvI2--
Mvalue+="I"
}

//End Big Loop!
//Begin Smaller Loops!
while(Num >= 500 && Num < 1000 || Num == 500) {

if(Num >= 900) {
Mvalue+="CM"
Num=Num - 900
}
else if(Num < 900 && Num >= DV1) {
Num=Num - DV1
Mvalue+="D"
}}
while(Num >= 100 && Num < 500 || Num == 100) {
Num=Num - 100
MvC++
}
if(MvC == 4) {
Mvalue+="CD"
}
if(MvC == 3) {
Mvalue+="C"
MvC--
}
if(MvC == 2) {
Mvalue+="C"
MvC--
}
if(MvC == 1) {
Mvalue+="C"
MvC--
}

while(Num >= 50 && Num < 100 || Num == 50) {
if(Num >= 90) {
Mvalue+="XC"
Num=Num - 90
}
else if(Num < 90 && Num >= 50) {
Num=Num - 50
Mvalue+="L"
}
}
while(Num >= 10 && Num < 50 || Num == 10) {
Num=Num - 10
MvX++

}
if(MvX ==4) {
Mvalue+="LX"
}
if(MvX == 3) {
Mvalue+="X"
MvX--
}
if(MvX == 2) {
Mvalue+="X"
MvX--
}
if(MvX == 1) {
Mvalue+="X"
MvX--
}
if(Num == 9) {
Mvalue+="IX"
Num=Num - 9
}
while(Num >= 5 && Num < 10 || Num == 5) {
if(Num <= 8 && Num >= 5) {
Num=Num - 5
Mvalue+="V"
}
}
while(Num >= 1 && Num < 5 || Num == 1) {
Num=Num - 1
MvI++
if(MvI == 4) {
Mvalue+="IV"
}
}
if(MvI == 3) {
Mvalue+="I"
MvI--
}
if(MvI == 2) {
Mvalue+="I"
MvI--
}
if(MvI == 1) {
MvI--
Mvalue+="I"
}
//End Smaller Loops!
MoreV1.innerHTML=MoreV
MoreV2.innerHTML=Mvalue
}
//-->
</script><form name="NumF">
<input type="text" value="" name="Num"> <input type="button" value="Przelicz" onClick="Roman()"> <span id="MoreV1" style="text-decoration: overline"></span> <span id="MoreV2"></spaN>
</form>