How to determine which is the value for xz

programming flash
1

I am building the town map for my site and I am using the javascript within the html to move the map on the predefined locations but I don’t know how to determine the exact values for the location
eg

<select style="margin:5px;" id="dropdown" name="ulice" onchange = "var koord = this.value; if (koord != '') { var koordArr = koord.split(','); Pozicija1(koordArr[0], koordArr[1]); }">
<option value="">Izaberi ulicu koju tražiš</option>
<option value = "1823,1576">1. decembra</option>
<option value = "1356,2035">18. Novembra</option>
<option value = "1017,1220">Nesto nesto</option>
</select>

1017,1220 this is the value which I dont know how to determine in Flash cs4