var Dom = YAHOO.util.Dom;
var Event=YAHOO.util.Event;
var tt_view_w;
var tt_view_h;
var screenPos={x:0, y:0};
function ttResetSize(e) {
	tt_view_w=Dom.getViewportWidth();
	tt_view_h=Dom.getViewportHeight();
}

function ttResetScroll(e) {
	screenPos={x:Dom.getDocumentScrollLeft(),y:Dom.getDocumentScrollTop()};
}

var yh_tt;
var tt_timeout;

var tt_header=document.createElement('div');
tt_header.id='tt_header';
tt_header.className='tt_header';

var tt_inner=document.createElement('div');
tt_inner.id='tt_inner';
tt_inner.className='yh_tooltip';

var tt_div=document.createElement('div');
tt_div.id='yh_tt';
tt_div.className='yh_tt_div';
tt_div.appendChild(tt_inner);

function init_tt() {
	document.body.appendChild ( tt_div );
	yh_tt=new YAHOO.widget.Overlay('yh_tt',{visible:false, zIndex:999});
	yh_tt.setBody ( tt_div );
	yh_tt.render(document.body);
	tt_div.style.display='';
	Event.addListener ( window, 'resize', ttResetSize );
	Event.addListener ( window, 'scroll', ttResetScroll );
	Event.addListener ( tt_div, 'click', hideTip );
	ttResetSize();
	ttResetScroll();
}

//See end.js// Event.onDOMReady( init_tt );


function _moveNodes(dst,src) {
 var c; // tmp
 if(dst==null || src==null) return;
 
 // empty dst
 while ( (c=dst.firstChild) ) {
  dst.removeChild(c);
 }
 // move src to dst
 while ( (c=src.firstChild) ) {
  dst.appendChild(src.removeChild(c));  
 }
}

var tt_curElem;
var tt_size={w:200,h:200}; // initial size..

function showTip(e, pelem, elem_tt_div, updateContents) {
	//elem=Event.getTarget(e);
	var elem = pelem;
	if(typeof(elem)!='object') elem=document.getElementById(pelem);
	if(typeof(updateContents)=='undefined') updateContents = false;
	
	helpOn(e);
	var reposition=tt_curElem != elem;
	if (tt_curElem != elem || updateContents) {
		if(typeof(elem_tt_div)=='undefined' || !elem_tt_div) elem_tt_div = elem.tt_div;
		else elem.tt_div = elem_tt_div;
		
		if(typeof(elem_tt_div)=='undefined') return; // have to try again :)
		if (tt_curElem && tt_curElem.tt_div != elem_tt_div) {
			// put tt_inner children back in tt_curElem
			//var td=YAHOO.util.Dom.get(tt_curElem.tt_div);
			/*for (var x=0;x<tt_inner.childNodes.length;++x) {
			 td.appendChild ( tt_inner.removeChild(tt_inner.childNodes[x]) );
			} */
			_moveNodes(Dom.get(tt_curElem.tt_div),tt_inner);
			
		}
		tt_div.innerHTML=''; // just a safety check
		tt_curElem=elem;
		
		if (elem.tt_useheader) {
			tt_div.appendChild(tt_header);
		}

		_moveNodes ( tt_inner, Dom.get(elem_tt_div) );
		tt_div.appendChild ( tt_inner );
		
	}
	var delay = function() {yh_tt.show();};
	clearTimeout(tt_timeout);
	YAHOO.util.Event.addListener ( elem, 'mousemove', moveTip, elem );
	tt_timeout = setTimeout(delay, TOOLTIP_DELAY);
	
	//yh_tt.show();
	//moveTip(e,elem);
	//yh_tt.show();
}

function moveTip(e,elem) {
	//msg("moveTip() elem.id=" + elem.id);
	var r=Dom.getRegion('yh_tt');	
	tt_size={w:r.right-r.left,h:r.bottom-r.top};
	
	var p=Event.getXY(e);
	var newPos=[p[0]+15,p[1]+15];
	// reposition higher if div goes beyond bottom of screen
	// bottom of viewable screen:
	var bs=screenPos.y+tt_view_h
	var swap=0;
	if (newPos[1] + tt_size.h > bs) {
		swap++;
		newPos[1] -= tt_size.h + newPos[1]-bs;
	}
		
	// right of screen
	var ls=screenPos.x+tt_view_w;
	if (newPos[0] + tt_size.w > ls) {
		swap++;
		newPos[0] -= tt_size.w+newPos[0]-ls;
	}
	
	// instead of moving, redo the orientation
	if (swap>1) {
		newPos=[p[0]-15-tt_size.w,
				p[1]-15-tt_size.h];
	}
		
	//logDebug ( newPos );
	yh_tt.cfg.setProperty(
		'xy', newPos);	
}

function hideTip(e, elem) {
	helpOff(e);
	clearTimeout(tt_timeout);
	if(yh_tt) yh_tt.hide();
}


function createTip ( pelem, divid, useHeader, noListener ) {

	if (typeof(useHeader)=='undefined') useHeader=false; // default NOT to use header
	
	if (!yh_tt || !pelem || pelem.tt_div ) return; // not yet initialized	
	if(typeof(noListener)=='undefined') noListener = false;
	
	var elem = pelem;
	if(typeof(elem)!='object') {
		elem = document.getElementById(pelem);
	}

	elem.tt_div=divid;
	elem.tt_useheader=useHeader;
	
	if(!noListener) {
		Event.addListener ( elem, 'mouseover', showTip, elem );
		//Event.addListener ( elem, 'mousemove', showTip, elem );
	}
	Event.addListener ( elem, 'mouseout', hideTip, elem );
}
function newTooltip(oHelp, tt, noListener, updateContents, callShow) {
	if (!yh_tt || !oHelp || tt.length==0) return; // not yet initialized	

	YAHOO.util.Dom.generateId(oHelp, 'mvrz-');
	var ttId = oHelp.id + "-tt";
	if(typeof(noListener)=='undefined') noListener = false;
	if(typeof(updateContents)=='undefined') updateContents = false;
	if(typeof(callShow)=='undefined') callShow = gShowTooltip;
	if(typeof(callShow)=='undefined') callShow = false;
	
	var oTT = document.getElementById(ttId);
	if(!oTT) {
		oTT = document.createElement('div');
		oTT.className = "tooltip";
		oTT.id = ttId;
		oTT.innerHTML = tt; // Do this before adding to DOM - otherwise IE gets an unknown run-time error

		//oHelp.appendChild(oTT);
		YAHOO.util.Dom.insertAfter(oTT, oHelp);

		createTip(oHelp, oTT.id, false, noListener);
	} else if(updateContents) { // Allow updates to the contents
		oTT.innerHTML = tt;
	}
	
	if(callShow) showTip(null, oHelp, oTT.id, updateContents);
}