Below code will create the contact look up on vf page.

I am able to get the name of the contact but not the id.

problem is ,  if 30 contact are having same name with different account names.

when i look for one contact and search it is bringing all the 3o contatcs with different accounts.

i know the proble  or mistake i am making, i am using contact name as where clus in the query.

i think i sholud be on based on id instead of name.

can any please suggest me how can i get the id for below look up code .

<apex:OutPutPanel id="contactlookupPanel" >
<apex:OutPutPanel rendered="{!displayLookup}">
Contact &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

<input type="hidden" name="testlookup_lkid" id="testlookup_lkid" value="000000000000000" />
<input type="hidden" name="testlookup_lkold" id="testlookup_lkold" value="" />
<input type="hidden" name="testlookup_lktp" id="testlookup_lktp" value="003" />
<input type="hidden" name="testlookup_lspf" id="testlookup_lspf" value="3" />
<input type="hidden" name="testlookup_lspfsub" id="testlookup_lspfsub" value="0" />
<input type="hidden" name="testlookup_mod" id="testlookup_mod" value="0" />

<span class="lookupInput">
<input autocomplete="off" id="testlookup" value="{!contactLookUp}" maxlength="255" name="testlookup" onchange="getElementByIdCS('testlookup_lkid').value='';getElementByIdCS('testlookup_mod').value='1';" size="20" tabindex="4" type="text" />
<a href="javascript&colon;%20openLookup%28%27%2F_ui%2Fcommon%2Fdata%2FLookupPage%3Flkfm%3DeditPage%26lknm%3Dtestlookup%26lktp%3D%27%20%2B%20getElementByIdCS%28%27testlookup_lktp%27%29.value%2C670%2C%271%27%2C%27%26lksrch%3D%27%20%2B%20escapeUTF%28getElementByIdCS%28%27testlookup%27%29.value.substring%280%2C%2080%29%29%29" id="con4_lkwgt" onclick="setLastMousePosition(event)" tabindex="4" title="Contact Name Lookup (New Window)">
<img src="/s.gif" alt="Customer Name Lookup (New Window)" class="lookupIcon" onblur="this.className = 'lookupIcon';" onfocus="this.className = 'lookupIconOn';" onmouseout="this.className = 'lookupIcon';this.className = 'lookupIcon';" onmouseover="this.className = 'lookupIconOn';this.className = 'lookupIconOn';" title="Customer Name Lookup (New Window)" />
</a>
</span>
<apex:commandButton value="OK" onclick="contactName();" rerender="contactlookupPanel">
<apex:actionFunction name="getContactName12" action="{!getContactName}" rerender="contactpageblock">
<apex:param name="contNameLkpParam" assignTo="{!contNameLkpParam}" value="{!contactLookUp}" id="conid2param"/>
</apex:actionFunction>
</apex:commandButton>