// The method is called when the user positions the mouse cursor over a glossary term in a document.
// Current implementation assumes the existence of an associative array (g_glossary). 
// The keys of the array correspond to the argument passed to this function.

var bGlossary=true;
var oDialog;
var oTimeout="";
var oTimein="";
var iTimein=.5;
var iTimeout=30;
var oLastNode;
var oNode;
var bInit=false;
var aTerms=new Array();

// Called from mouseover and when the contextmenu behavior fires oncontextopen.
function clearDef(){
	if((event)&&(event.toElement!=null)){
		if(typeof(oTimein)=="number"){
			window.clearTimeout(oTimein);
		}
		if(oDialog.dlg_status==true){
			hideDef();
		}
	}
}
function hideDef(){
	window.clearTimeout(oTimeout);
	oTimeout="";
	oDialog.style.display="none";
	oDialog.dlg_status=false;	
}
function showDef(oSource){
	if(bInit==false){
		glossaryInit();
		bInit=true;
	}
	if(bGlossary==true){
		if(typeof(arguments[0])=="object"){
			oNode=oSource;
		}
		else{
			oNode=window.event.srcElement;
		}
		var bStatus=oDialog.dlg_status; // BUGBUG: oDialog is null.
		if((oLastNode!=oNode)||(bStatus==false)){
			if((typeof(oTimein)=="number")&&(event)&&(event.fromElement!=null)){
				window.clearTimeout(oTimein);
			}
			oTimein=window.setTimeout("openDialog(oNode)",iTimein*1000);
		}	
	}
}



function glossaryInit(){
	// Proceed only if glossary terms are loaded.
	if(typeof(g_glossary)=="object"){
		oDialog=fnCreateDialog(150,50);
		//fnAttachMenus();		
	}
	else{
		alert("fail");
	}
}
function navigateTerm(){
	var oNode=event.srcElement;
	var iTermID=oNode.termID;
	if(oNode!=aTerms[iTermID]){
		var iAbsTop=getAbsoluteTop(aTerms[iTermID]);
		if(iAbsTop<document.body.scrollTop){
			window.scrollTo(document.body.scrollLeft,getAbsoluteTop(aTerms[iTermID]));
		}
		openDialog(aTerms[iTermID]);
	}
}
function disableGlossary(){
	if(bGlossary==true){
		event.srcElement.innerText="Enable Automatic Glossary";
		bGlossary=false;
		hideDef();		
	}
	else{
		event.srcElement.innerText="Disable Automatic Glossary";
		bGlossary=true;
	}
}
function openGlossary(){

}
function fnSetMenus(){
	var oNode=event.srcElement;
	var oMenu=oNode.createMenu("SPAN","G_RID");
	var oSubItem1=oNode.createMenuItem("Glossary",fnStub,oMenu,true);
	document.body.createMenuItem("Open External Glossary",openGlossary,oSubItem1.subMenu);
	document.body.createMenuItem("Disable Automatic Glossary",disableGlossary,oSubItem1.subMenu);	
	for(var i=0;i<aTerms.length;i++){
		var oItem=document.body.createMenuItem(aTerms[i].innerText,navigateTerm,oMenu);
		oItem.termID=i;
	}
}
// This is a bogus stub.  It should be sniffed out rather than added in.
function fnStub(){

}
function fnAttachMenus(aTips){
	// This walk is only necessary for the context menu.
	var aTips=document.body.all.tags("SPAN");
	for(var i=0;i<aTips.length;i++){
		var oNode=aTips[i];
		if(oNode.getAttribute("G_RID")){
			var sTerm=oNode.getAttribute("G_RID");
			if(typeof(g_glossary[sTerm])=="string"){
				// Removed client-side scripting to add events.  This entire process should be singled out for IE 5 and later .. and, its only for the context menu.
				aTerms[aTerms.length]=oNode;
			}
		}
	}
	if(oBD.majorVer>=5){
		document.body.addBehavior(gsContextMenuPath);
		document.body.onbehaviorready="fnSetMenus()";
		document.body.oncontextopen="clearDef()";
	}

}
// Called by showDef.  The showDef function sniffs for initialization.
function openDialog(oNode,x,y){
 	var bStatus=oDialog.dlg_status; // BUGBUG: This code assumes that oDialog has been initialized
	if(bStatus==false){
		oDialog.dlg_status=true;
		oDialog.style.display="block";
	}
	else{
		if(typeof(oTimeout)=="number"){
			window.clearTimeout(oTimeout);
		}
	}
	
	var sTerm=oNode.getAttribute("G_RID");	
	
	oDialog.innerHTML=g_glossary[sTerm];
		
	var iScrollLeft=document.body.scrollLeft;
	var iScrollTop=document.body.scrollTop;
	var iOffsetLeft=getAbsoluteLeft(oNode)// - iScrollLeft;
	var iOffsetWidth=oNode.offsetWidth;
	var oParent=oNode.parentElement;
	var iOffsetParentLeft=getAbsoluteLeft(oParent);
	var iOffsetTop=getAbsoluteTop(oNode); //- iScrollTop;
	var iOffsetDialogWidth=oDialog.offsetWidth;
	
	
	if((iOffsetLeft + iOffsetWidth) > (iOffsetParentLeft + oParent.offsetWidth)){
		iOffsetLeft=iOffsetParentLeft;
		if(iOffsetLeft - iOffsetDialogWidth>0){
			iOffsetTop+=oNode.offsetHeight;
		}
	}
	var iLeft=0;
	var iTop=0;
	if((iOffsetLeft + iOffsetWidth - iScrollLeft + iOffsetDialogWidth) < document.body.offsetWidth ){
		iLeft=iOffsetLeft + iOffsetWidth;
	}
	else{
		if(iOffsetLeft - iOffsetDialogWidth>0){
			iLeft=iOffsetLeft - iOffsetDialogWidth;
		}
		else{
			iLeft=iOffsetParentLeft;
		}
	}
	if(iOffsetTop - iScrollTop<oDialog.offsetHeight){
		iTop=iOffsetTop + oNode.offsetHeight;
	}
	else{
		iTop=iOffsetTop - oDialog.offsetHeight;
	}
	oDialog.style.top=iTop;
	oDialog.style.left=iLeft;
	oTimeout=window.setTimeout("hideDef()",iTimeout*1000);	
}
function getAbsoluteTop(oNode){
	var oCurrentNode=oNode;
	var iTop=0;
	while(oCurrentNode.tagName!="BODY"){
		iTop+=oCurrentNode.offsetTop;
		oCurrentNode=oCurrentNode.offsetParent;
	}
	return iTop;
}
function getAbsoluteLeft(oNode){
	var oCurrentNode=oNode;
	var iLeft=0;
	while(oCurrentNode.tagName!="BODY"){
		iLeft+=oCurrentNode.offsetLeft;
		oCurrentNode=oCurrentNode.offsetParent;
	}
	return iLeft;
}
function fnCreateDialog(iWidth,iHeight){
	document.body.insertAdjacentHTML("BeforeEnd","<DIV></DIV>");
	oNewDialog=document.body.children(document.body.children.length-1);
	oNewDialog.className="clsTooltip";
	oNewDialog.style.width=iWidth;
	oNewDialog.dlg_status=false;
	return oNewDialog;
}