previousTextFramePage='';
function showServiceHelp(serviceID)
{
var page=serviceHelpPage[serviceID]; 
previousTextFramePage=top.TextFrame.document.location;
top.TextFrame.document.location.replace('http://'+document.location.hostname+appDir+page);
}
function showWMSServiceHelp(serviceID)
{
var page=wmsHelpPage[serviceID]; 
previousTextFramePage=top.TextFrame.document.location;
top.TextFrame.document.location.replace('http://'+document.location.hostname+appDir+page);
}