Help! Open URL from dynamic drop down with PHP and mySQL

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http://www.daniweb.com – I need helping fetching the URLs I have stored in my database and opening a new page. I am using a dynamic drop down menu for users to select a category and company. Once a user selects category(parent table) the child table opens up. The user then can click the submit button to open that page. This is my child table CREATE TABLE `companies` ( `comp_id` int(10) unsigned NOT NULL auto_increment, `comp_name` text NOT NULL, `comp_cat_id` mediumint(8) unsigned NOT NULL, `comp_url` varchar(512) NOT NULL, PRIMARY KEY (`comp_id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=128; My form code is   <form id="form1" name="form1" method="post" action="">         <select size=1 name="Parent" id="Parent" onchange="WA_FilterAndPopulateSubList(Child_WAJA,MM_findObj('Parent'),MM_findObj('Child'),0,0,false,': ')">           <option value="">Please Select Below</option>           <?php do {  ?>           <option value="<?php echo $row_Parent['cat_id']?>"><?php echo $row_Parent['cat_name']?></option>           <?php } while ($row_Parent = mysql_fetch_assoc($Parent));   $rows = mysql_num_rows($Parent);   if($rows > 0) {       mysql_data_seek($Parent, 0);           $row_Parent = mysql_fetch_assoc($Parent);   } ?>         </select>       </form>       <p>&nbsp;</p>     </div>             <div class="stepone">     <h3> Step Two:</h3>     <p> Choose a Company <strong><em>(Optional) </em></strong></p>     <form id="form2" name="form2" method="post" action="">       <select  size=1 name="Child" id="Child">         <option>Please Select a Company</option>       </select>       <input type="image" src="images/global images/gobutton.png" name="go" id="go" value="Submit" />     </form>     <p>&nbsp;</p>     </div> I cant figure out what PHP code I need to put in the action to call my 'comp_url' row and open a new page. I have come up with action="<?php echo <a href={'$row_Child['comp_url']}'/a>?>"> But it doesn't work Please let me know if you need more information. I am new to all this. Thanks again!! (General)