so i need to check which options are selected from select1 and select2 code:
<select id="select1">
<option value="val_a1"> abc </option>
<option value="val_b1"> abc </option>
<option value="val_c1"> abc </option>
</select>
<select id="select2">
<option value="val_a2"> abc </option>
<option value="val_b2"> abc </option>
<option value="val_c2"> abc </option>
</select>