need help with an on-click java script

[aalift]

can someone give me the basic script for a on-click java funtion? what it needs to do is open a window/page in existing form and not show what wasin form then it needs to do a mysql search for prices in datad base and put into the window it has pulled up. heres where the onclick command is:
<tr catcode="Trans/Drive Axle" class="GridRowAlt" onMouseOver="Category_SetActive(this,'AC0927347                  ');" onMouseOut="Category_DeActivate(this);" onClick="Category_ClickEvent('AC0927347','2');" style="display: none">
                            <td style="width: 15px" class="GridRowDetails" id="AC0927347">&nbsp;</td>
                            <td class="GridRowDetails">&nbsp;AC0927347</td>
                            <td class="GridRowDetails">&nbsp;Bearing, Cone</td>
                            <td class="GridRowDetails">&nbsp;2</td>
                            <td class="GridRowDetails">&nbsp;Wheel, Inner</td>
                          </tr>
i need this filled in:
function Category_ClickEvent

it suppose to pull this file:
www.allforkliftparts.com/partinquiry.php
and can use some the info from above but has to get prices from mysql data base. any help will be appreciated
thanks