Embedding Javascript in a jsp page

I'm trying to embed javascript in a jsp page but it seems as if the javascript I have written is being ignored:

Code:

<%@ page import="java.util.ResourceBundle" %>
<%@ page import="com.sap.pct.hcm.orgmanagementeventing.CKey" %>

<jsp:useBean id="valueBean" scope="application" class="bean.bukrsHelper" />
<jsp:useBean id="cKey" scope="request" class="com.sap.pct.hcm.orgmanagementeventing.CKey" />
<jsp:setProperty name="valueBean" property="dispPosNum" />


<%
  String targetURL = componentRequest.createComponentURL(componentRequest.getNode(), null);
  String jsFunctionName = "handle_addToShoppingCart_Event_" + componentRequest.getComponentContext().getValue("COMPONENT_ID");
%>

start

<script>

  alert("In First Script.")
  document.write "before subscribe event";

 
  EPCM.subscribeEvent( 'urn:com.sap.pct.hcm.orgmanagement:CurrentObject',  'objectChanged', <%=jsFunctionName%> );

  function <%=jsFunctionName%> ( evt ) {
    alert("Please enter predictions for all the games.")
    document.write ("In function");    
    document.write evt;  
    location.href = '<%=targetURL%>';
  }

</script>
<SCRIPT language ="JavaScript">
  var data = EPCM.loadClientData( "urn:com.sap.pct.hcm.HCMCKey:CurrentObject", "P ");
  alert("After Load Client Data")  
  if ( data != null) {
    document.write data;
  }
</SCRIPT>

end

End of Code:

Within this extract none of the write commands or alert command seem to do anything.  All that gets written to the screen is "start" and "end"

Many THanks,
Paul