rem: loadPage(themeDisplay.getPathMain() + "/messaging/action", "cmd=unload"); 
add: Ajax.request(themeDisplay.getPathMain() + "/messaging/action?cmd=unload", {reverseAjax:true}); 
context: 	onPageUnload : function() {		loadPage(themeDisplay.getPathMain() + "/messaging/action", "cmd=unload");	},
meta: 10143	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10143/25b685866d385ec9ed69e539f12f812b06d4887e/messaging.js/clean/portal-web/docroot/html/js/portlet/messaging.js