<a href="/urltopage?parameter1=@variable1@¶meter2=@variable2@">Click Here</a>
</pre>
Replace "variable1" with the actual variable name and "parameter1" with a corresponding name (eg. firstname=@firtsname@).
Replace "field1" or "element1" etc. with the actual form or element id name and "parameter1" with the parameter name.
eg.
<pre>
var para1=document.getElementById('firstname');
<input type="text" value="" id="firstname">
or
var para1=document.getElementById('firstname');
<div id="firstname"></div>
</pre>