Hi All,

I've gone through a couple of sites including 

1. http://blog.jeffdouglas.com/2011/08/12/roll-your-own-salesforce-lookup-popup-window/
2. http://bobbuzzard.blogspot.com/2010/09/visualforce-lookup.html
3. http://boards.developerforce.com/t5/Visualforce-Development/Overriding-lookup-icon/m-p/196802#M26504 (no solution found)

The jist of what I'm trying to do is override all of our lookup on the account detail for the "Go Forward PM System" object. The reason why is that sometimes the name of the GFPM is different than the vendor that sells it. I can add additional filters to the standard lookup page, but this only filters off of the 'recently' viewed, which is not helpful since we have quite a few GFPM records.

However, I do not want to completely override our standard account page since we have several record types and layouts with over 100 fields on each. I am able to override the lookup, but I am having trouble passing the Id of the selection back to the account page. In both of the examples by Jeff and Bob, they are able to pass it back by having the field element specified as apex:inputfield. With apex:detail, is there a way to get the field Id to pass it back? If so how can I pass it back? I also humored the idea of using a hiddenInput, but ideally, I would like the user to be able to see that they modified the page (standard feel).

I have very limited javascript expereince, so that's where the additional struggle is coming from. Any education you gurus can provide would be greatly helpful.

Here's what I have so far:

Detail Page:

<apex:page standardController="Account">
    <script type="text/javascript"> 
   	
		function openLookup(baseURL, width, modified, searchParam) {
			var lookupType = baseURL.substr(baseURL.length-3,3); //This is the value for lktp
			//var lookupFieldId = baseURL.substr(baseURL.length-38,17); //This is the value for lknm, renamed as txtId
			//var lookupFormId = escapeUTF("{!$Component.detail}"); //This is the value for the other half of lknm, identifying the form, renamed as frm
			
			if(lookupType == "a1i") {
				var urlArr = baseURL.split("&");				
				var txtId = '';
				if(urlArr.length > 2) {
					urlArr = urlArr[1].split('=');
					txtId = urlArr[1];
				}
				
				baseURL = "/apex/GFPMCustomLookupSearch?txt=" + txtId + "&frm=" + escapeUTF("{!$Component.detail}");  		
			}
			
			openPopup(baseURL, "lookup", 350, 480, "width="+width+",height=480,toolbar=no,status=no,directories=no,menubar=no,resizable=yes,scrollable=no", true);
		}		
    </script>    
    <apex:form >
    	<apex:inputField value="{!account.Go_Forward_PM_System__c}"/>
    </apex:form>
    <apex:detail id="detail" inlineEdit="true"/>
</apex:page>

Lookup page: 

<apex:page controller="GFPMDynamicSearch" title="Search" showHeader="false" sideBar="false" tabStyle="Go_Forward_PM_System__c" id="pg">

	<apex:form id="form">
	<apex:actionFunction name="doSearchAF" action="{!searchGFPM}"/>
	<apex:outputPanel id="page" layout="block" style="margin:5px;padding:10px;padding-top:2px;">
		<apex:actionRegion >
			<apex:outputPanel id="top" layout="block" style="margin:5px;padding:10px;padding-top:2px;">
			<apex:outputLabel value="Search" style="font-weight:Bold;padding-right:10px;" for="txtSearch" />
				<apex:inputText id="txtSearch" value="{!searchText}" onkeypress="return noenter(event);" />
				<span style="padding-left:5px">
					<apex:commandButton id="btnSearch" value="Search" action="{!searchGFPM}" rerender="searchResults"/>
				    <apex:actionStatus id="status" startText="requesting..."/>
				</span>
			</apex:outputPanel>
			
			<apex:outputPanel id="pnlSearchResults" style="margin:10px;height:350px;overflow-Y:auto;" layout="block">
				<apex:pageBlock id="searchResults"> 
					<apex:pageBlockTable value="{!results}" var="result" id="tblResults">
						<apex:column headerValue="Go Forward PM System">
							<apex:outputLink value="javascript&colon;top.window.opener.lookupPick2('{!FormTag}','{!TextBox}_lkid','{!TextBox}','{!result.Id}','{!result.Name}', false)" rendered="{!NOT(ISNULL(result.Id))}">{!result.Name}</apex:outputLink>
						</apex:column>					
				    	<apex:column headerValue="Vendor Account" value="{!result.Vendor_Account__r.Name}"/>
				    	<apex:column headerValue="Status" value="{!result.Status__c}"/>
					</apex:pageBlockTable>
				</apex:pageBlock>
			</apex:outputPanel>			
		</apex:actionRegion>			
	</apex:outputPanel>
	</apex:form>
	
	<script type='text/javascript'>
		//This function allows the user to press enter to search
		function noenter(ev) {
			if (window.event && window.event.keyCode == 13 || ev.which == 13) {
				doSearchAF();
				return false;
			} else {
				return true;
			}
		}
	</script>	
</apex:page>