how to remove drop down values while adding

Please elaborate your problem...

I have dropdown which is dynamically created by user how much they need . In below code it will add headno1  to headno(n) value.

for example :user create 5 drop downs .

headno1,headno2,headno3,headno4,headno5

but the fill only 3 values  remain 2 values are select Head Value

headno1 =5
headno2=select Head Value
headno3 =4
headno4 =9
headno5 =select Head value


While adding(Saving) i want to remove headno2,headno5  and pass remaining 3 values to back end

like that i want to .. How to achieve this ??

div id="headNo1">
<select name="headNo1" id="headNo1">
       <option value="x">Select Head Value</option>
	<option value="1">1</option>
	<option value="2">2</option>
	<option value="3">3</option>
	<option value="4">4</option>
	<option value="5">5</option>
	<option value="6">6</option>
	<option value="7">7</option>
	<option value="8">8</option>
	<option value="9">9</option>
</select>
</div>
<div id="headNo2">
<select name="headNo2" id="headNo2">
               <option value="x">Select Head Value</option>
	<option value="1">1</option>
	<option value="2">2</option>
	<option value="3">3</option>
	<option value="4">4</option>
	<option value="5">5</option>
	<option value="6">6</option>
	<option value="7">7</option>
	<option value="8">8</option>
	<option value="9">9</option>
</select>
</div>
<div id="headNo3">
<select name="headNo3" id="headNo3">
       <option value="x">Select Head Value</option>
	<option value="1">1</option>
	<option value="2">2</option>
	<option value="3">3</option>
	<option value="4">4</option>
	<option value="5">5</option>
	<option value="6">6</option>
	<option value="7">7</option>
	<option value="8">8</option>
	<option value="9">9</option>
</select>
</div>

Select allOpen in new window

On form's onBeforeSubmit event check for select Head Value if found remove those heads.

Save button is a image , So when click the image i want to remove that time

On the back-end, you can check the value of the inputs before save it and if the value equal "x" just ignore it.

Ahmed Merghani--------- Thanks for your Info ....  :D :D ..



That drop down list is used lot of files and lot of tables so that is not possible in back end ... Some condition and some other screen  i need to add x value ....

So that is not possible before saving ....

thanks Mukesh Yadav... Its not generic thats is the problem . Can you help to make it generic one .