How to store checkbox values in hidden fields

[gilgalbiblewhee]

How do you store the checkbox alues in a hidden field?

  <div id="divform" style="position:absolute;z-index:2; ">
<form name="frm" id="frm" action="../wait.html" method="post" >
<div id="set1" style="position:absolute; left:65px;top:146px;">

<span style="position:absolute; top: 170px; left: 180px;width:104px;">
<input name="check" id="check"  type="checkbox" onClick="photos_bought(this.value);" value="Ireland: picture 10 300dpi" />300dpi $100<br />
<input name="check" id="check"  type="checkbox" onClick="photos_bought(this.value);" value="Ireland: picture 10 600dpi" />600dpi $175</span>

<span style="position:absolute; left: 60px;  top:270px;width:104px;">
<input name="check" id="check"  type="checkbox" onClick="photos_bought(this.value);" value="Ireland: picture 1 300dpi" />300dpi $100<br />
<input name="check" id="check"  type="checkbox" onClick="photos_bought(this.value);" value="Ireland: picture 1 600dpi" />600dpi $175</span>

<span style="position:absolute; left: 307px; top:150px;width:71px;">
<textarea name="order" id="order" cols="50" rows="5"></textarea><br />
<input type="button" onClick="createOrder();openpopup();" value="Send order" /><input type="reset" value="Reset" /> 
</span>
</div>

</form>

[curtiss]

gil - I think you need to start being a little more specific with your questions. With this question and your previous one, I am having a little trouble figuring out where you're having trouble, what you've tried, etc.

Regardless, I believe the answer to your question lies in Javascript. Your Javascript function should look something like:

function storeValue(what) {
if(what.checked = true) {
document.getElmentById('myHiddenField').value = what.value;
}

Your checkboxes should look something like:

<input type='checkbox' value='myValue' onchange='storeValue(this)' />

[gilgalbiblewhee]

Ok I think it worked the reason I want to store in the index from the iframe's iframe is to retrieve it in a popup window.
So here's what I have so far:

function createOrder(){
	clickable=document.forms[0].check
	txt=""
for (i=0;i<clickable.length;++ i){
	if (clickable[i].checked){
		txt=txt + clickable[i].value + " "
		}
	}
document.getElementById("order").value="You ordered: " + txt
}	

function storeValue(what) {
	var oreilly = new Array(); //to hold the answer from the user	
	
	oreilly[0] = parent.parent.document.getElementById("gal1").value;/*parent.parent.document.getElementById("gal1").value;*/ //copies the user buyer to index.html hidden field  
	oreilly[1] = parent.parent.document.getElementById("gal2").value; //copies the user buyer to index.html hidden field  
	oreilly[2] = parent.parent.document.getElementById("gal3").value; //copies the user buyer to index.html hidden field  
	oreilly[3] = parent.parent.document.getElementById("gal4").value; //copies the user buyer to index.html hidden field  		
	oreilly[4] = parent.parent.document.getElementById("gal5").value; //copies the user buyer to index.html hidden field 

	if(what.checked = true) {
		for(var i=0; i<oreilly.length; i++){
			oreilly[i].value = what.value;
		}
	}
}

function openpopup(){
	var oreilly = new Array(); //to hold the answer from the user	
	
	oreilly[0] = parent.parent.document.getElementById("gal1").value;/*parent.parent.document.getElementById("gal1").value;*/ //copies the user buyer to index.html hidden field  
	oreilly[1] = parent.parent.document.getElementById("gal2").value; //copies the user buyer to index.html hidden field  
	oreilly[2] = parent.parent.document.getElementById("gal3").value; //copies the user buyer to index.html hidden field  
	oreilly[3] = parent.parent.document.getElementById("gal4").value; //copies the user buyer to index.html hidden field  		
	oreilly[4] = parent.parent.document.getElementById("gal5").value; //copies the user buyer to index.html hidden field 	
	var newwindow1 = window.open("../orderform.html", "polar_bear", "width=450, height=420");	
	var tmp = newwindow1.document;
	for(var i=0; i<oreilly.length; i++){
		tmp.write(oreilly[i]);
	}
}

createorder(); is used in the button as an onclick an is to test the checkboxes in the same page.
storeValue(what) is what you mentioned above curtis it's storing to the index page (parent.parent.).

I have a popup page in the same directory of the index and I want to write in the popup whatever is stored in the hidden fields.