1. Copy and paste the following between your HEAD tags:-

if (snum==fnum && fnum==0 || snum==fnum && fnum==1){snum=2;listprimenum.getlist.value="Get Primes Between "+fnum+" and "+snum}

if (snum==fnum){alert ("Please choose a second number greater than "+fnum+"!");listprimenum.numtwo.focus();listprimenum.numtwo.select();return false}

if (fnum>snum)
{var temp=fnum;fnum=snum;snum=temp}

function UpdateButton()
{listprimenum.getlist.value="Get Primes Between "+listprimenum.numone.value+" and "+listprimenum.numtwo.value}

function putFocus(formInst, elementInst)
{document.forms[0].elements[1].focus();document.forms[0].elements[1].select()}
function select_area()
{listprimenum.numone.select()}

function select_area1()
{listprimenum.numtwo.select()}
</script>

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2. Copy and paste the following code between your BODY tags where you want the input displayed:
<div style="position:absolute; left:250; top:200">
<table width=90% border=0 bordercolor=#ffff00 cellspacing="0" cellpadding="10"><tr><td>

<h3 align="center">Prime Numbers Between Two Numbers</h3><ul type="square">
<li>Prime numbers are positive integers that can only be divided by themselves and 1. Apart from 2 all other prime numbers are, by definition, odd numbers. 
<li>The first 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29.
<li>You may want a list of prime numbers between two other numbers. 
<li>Input the first and last number of your interest. 
<li>Press 'Get Prime Numbers Between...'</ul>
<p>

<fieldset>
<legend style="font-size:16; color:#000000" align="center">Prime Numbers Between Two Numbers</legend>
<table width=100% border=0 bordercolor=#ffff00 cellspacing="0" cellpadding="6"><tr><td>
<form name="listprimenum">
<tr>
<td>First Number
<td><input type="text" style="text-align:center" name="numone" value=0 size="15" onClick="select_area()" onKeyPress="if ((event.keyCode<48) || (event.keyCode>57)) event.returnValue=false" onKeyUp="UpdateButton()">

<tr><td>Second Number
<td><input type="text" style="text-align:center" name="numtwo" value=0 size="15" onClick="select_area1()" onKeyPress="if ((event.keyCode<48) || (event.keyCode>57)) event.returnValue=false" onKeyUp="UpdateButton()">
 
<tr><td align="center" colspan=2 align="center">
<input type="button" name="getlist" value="Get List Of Prime Numbers" onclick="ListOfPrimes()">
<br><br>
<div style="background:#feffc6;color:#ff0000;text-align:left" id="results"></div>
<div style="background:#feffc6;color:#0000ff;text-align:left" id="results1"></div>
</form>
</td></tr></table>
</fieldset>
</td></tr></table></div>
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Please Note
You can display where ever you like. You change the "left" and "top" values in the opening "div" tag above to whatever values you need. 
a) "top" is the vertical distance of the top left corner of the display starting at zero. The higher the number the lower down the page.
b) "left" is the horizontal distance of the top left corner of the display starting at zero. The higher the number the further across the page.
c) You can change also the color of the display and the background.

If you have any problems or questions please email us at info@datedial.com.

Linking Information:-
TITLE : Prime factors between two numbers
URL : http://www.datedial.com/datPrime_Numbers_Between_Numbers.asp
DESCRIPTION : Lists the prime factors between two numbers.