var dom = (document.getElementById) ? true : false;
var ns5 = (!document.all && dom || window.opera) ? true: false;
var ie5 = ((navigator.userAgent.indexOf("MSIE")>-1) && dom) ? true : false;
var ie4 = (document.all && !dom) ? true : false;
var nodyn = (!ns5 && !ie4 && !ie5 && !dom) ? true : false;

var origWidth, origHeight;

if (nodyn) { event = "nope" }

var tipFollowMouse= true;	
var tipWidth= 270;
var offX= 20;	// how far from mouse to show tip
var offY= 12; 
var tipBorderWidth= 1;

var tooltip, tipcss;
function initTip() {
	if (nodyn) return;
	tooltip = (ie4)? document.all['tipDiv']: (ie5||ns5)? document.getElementById('tipDiv'): null;
	tipcss = tooltip.style;
	if (ie4||ie5||ns5) {	// ns4 would lose all this on rewrites
		tipcss.width = tipWidth+"px";
		tipcss.border = "1px solid #DDDDDD";
		tipcss.backgroundColor = "#FEF5E3";
		tipcss.padding = "4px";
	}
	if (tooltip&&tipFollowMouse) {
		document.onmousemove = trackMouse;
	}
}

//window.onload = initTip;

var t1,t2;	// for setTimeouts
var tipOn = false;	// check if over tooltip link

function showTip(evt, str){
	if (!tooltip) return;
	if (t1) clearTimeout(t1);	
	if (t2) clearTimeout(t2);
	tipOn = true;
	if (ie4||ie5||ns5) tooltip.innerHTML = str;
	if (!tipFollowMouse) positionTip(evt);
	else t1=setTimeout("tipcss.visibility='visible'",100);
}


/*
if (document.images) {
	var theImgs = new Array();
	for (var i=0; i<messages.length; i++) {
  	theImgs[i] = new Image();
		theImgs[i].src = messages[i][0];
  }
}
*/

function showMember(evt, name, img, diet, regDate, startWeight, currentWeight, goalWeight, soFar, toGo){
	var result = 
		'<table style="line-height:15px" width="' + tipWidth + '" cellpadding="2" cellspacing="0"><tr><td valign="top" width="30px" style="border-bottom:1px solid #DDDDDD;padding-bottom: 5px"><img src="' +
		img + '" border="0" width="30"></td><td valign="top" width="100%" style="border-bottom:1px solid #DDDDDD;"><b>' +
		name + '</b>';
	if(diet != null && diet != '')
		result = result + '<div style="font-size:10px">on diet: <b>' + diet + '</b></div>';
	result = result + '</td></tr><tr><td></td><td>';
	if(startWeight != null && startWeight != ''){
		result = result + '<div style="font-size:15px;margin:10 0 0 0"><b>Lost so far: <span style="color:#63C1A6">' + soFar + '</span></b></div><div style="font-size:15px;margin:10 0 0 0;padding-bottom:5px;border-bottom:1px solid #DDDDDD;"><b>Still to go: <span style="color:#FF8D6A">' + toGo + '</span></b></div>';	
		result = result + '<div style="margin:10 0 0 0;font-size:10px">start: ' + startWeight + ' |  current: ' + currentWeight + ' | goal:' + goalWeight + '</div>';
	}
	result = result + '<div style="font-size:10px">(fatsecret member since ' + regDate + ')</div>';
	result = result + '</td></tr></table>';
	showTip(evt, result);
}

var mouseX, mouseY;
function trackMouse(evt) {
	standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body //create reference to common "body" across doctypes
	mouseX = (ns5)? evt.pageX: window.event.clientX + standardbody.scrollLeft;
	mouseY = (ns5)? evt.pageY: window.event.clientY + standardbody.scrollTop;
	if (tipOn) positionTip(evt);
}

function positionTip(evt) {
	if (!tipFollowMouse) {
		mouseX = (ns5)? evt.pageX: window.event.clientX + standardbody.scrollLeft;
		mouseY = (ns5)? evt.pageY: window.event.clientY + standardbody.scrollTop;
	}
	// tooltip width and height
	var tpWd = (ie4||ie5)? tooltip.clientWidth: tooltip.offsetWidth;
	var tpHt = (ie4||ie5)? tooltip.clientHeight: tooltip.offsetHeight;
	// document area in view (subtract scrollbar width for ns)
	var winWd = (ns5)? window.innerWidth-20+window.pageXOffset: standardbody.clientWidth+standardbody.scrollLeft;
	var winHt = (ns5)? window.innerHeight-20+window.pageYOffset: standardbody.clientHeight+standardbody.scrollTop;
	// check mouse position against tip and window dimensions
	// and position the tooltip 
	if ((mouseX+offX+tpWd)>winWd) 
		tipcss.left = mouseX-(tpWd+offX)+"px";
	else tipcss.left = mouseX+offX+"px";
	if ((mouseY+offY+tpHt)>winHt) 
		tipcss.top = winHt-(tpHt+offY)+"px";
	else tipcss.top = mouseY+offY+"px";
	if (!tipFollowMouse) t1=setTimeout("tipcss.visibility='visible'",100);
}

function hideTip() {
	if (!tooltip) return;
	t2=setTimeout("tipcss.visibility='hidden'",100);
	tipOn = false;
}