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

var origWidth, origHeight;

// avoid error of passing event object in older browsers
if (nodyn) { event = "nope"; };

///////////////////////  CUSTOMIZE HERE   ////////////////////
// settings for tooltip 
// Do you want tip to move when mouse moves over link?
var tipFollowMouse= false;	
// Be sure to set tipWidth wide enough for widest image
var tipWidth= 300;
var offX= 20;	// how far from mouse to show tip
var offY= 12; 

// to layout image and text, 2-row table, image centered in top cell
// these go in var tip in doTooltip function
// startStr goes before image, midStr goes between image and text
var startStr = '<table width="' + tipWidth + '"><tr><td align="center" width="100%"><img src="';
var midStr = '" border="0"></td></tr><tr><td valign="top">';
var endStr = '</td></tr></table>';

//////////////////////////////////////////////////////////
//  initTip	- initialization for tooltip.
//		Global variables for tooltip. 
//		Set styles
//		Set up mousemove capture if tipFollowMouse set true.
///////////////////////////////////////////////////////////

var tooltip, tipcss;
function initTip()
{

	var flyoverTip = document.createElement('div');
	flyoverTip.setAttribute('id','tipDiv');
	flyoverTip.style.display='none';
	flyoverTip.style.position='absolute'; 
	flyoverTip.style.zIndex='100';
	document.body.appendChild(flyoverTip);

	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

	}
	if (tooltip&&tipFollowMouse) {
		document.onmousemove = trackMouse;
	}
	tooltip.onmouseover= function() { clearTimeout(t2);};
	tooltip.onmouseout= hideTip;
}

appendOnLoad(initTip);

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

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);
}

/////////////////////////////////////////////////////////////
//  positionTip function
//		If tipFollowMouse set false, so trackMouse function
//		not being used, get position of mouseover event.
//		Calculations use mouseover event position, 
//		offset amounts and tooltip width to position
//		tooltip within window.
/////////////////////////////////////////////////////////////
function positionTip(evt) {
	if (!tipFollowMouse) {
		standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body
		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("showFlyover()",500);
}

function hideTip()
{
	if(!tooltip) 
		return;
	
	if (t1) {clearTimeout(t1)};
	t2 = setTimeout("tipcss.display='none'; tipOn = false;",500);
}

function flyoverRequest(member_id, evt)
{											
	flyover_url = "ct_xt_user_flyover.bix?c="+campaign_id+"&user_member_id=" + member_id+"&rand="+generateRandomString(8);

	if (!tooltip) return;
	if (t1) {clearTimeout(t1)};
	if (t2) {clearTimeout(t2)};
	tipOn = true;
	if(!tipFollowMouse)
	{
		positionTip(evt);
	}
	else
	{
		t1 = setTimeout("showFlyover()",500);
	}
}


function flyoverRequestEnt(campaign_id, member_id, evt)
{											
	flyover_url = "ct_xt_user_flyover.bix?c="+campaign_id+"&user_member_id=" + member_id+"&rand="+generateRandomString(8);
	
	if (!tooltip) return;
	if (t1) {clearTimeout(t1)};
	if (t2) {clearTimeout(t2)};
	tipOn = true;
	if(!tipFollowMouse)
	{
		positionTip(evt);
	}
	else
	{
		t1 = setTimeout("showFlyover()",500);
	}
}





function showFlyover()
{
	BI.ajax_call(flyover_url, 'GET', null, flyoverExecute);
}



function flyoverExecute(response_, error_)
{
	// Check if any javascript errors occurred
	if(error_)
	{
		return false;
	}
	
	if(!checkSessionTimeout(response_.responseText))
		return;
		
	document.getElementById('tipDiv').innerHTML = response_.responseText;
	tipcss.display = 'block';
}