var dom = (document.getElementById) ? true : false;
var ns5 = ((navigator.userAgent.indexOf("Gecko")>-1) && dom) ? true: false;
var ie5 = ((navigator.userAgent.indexOf("MSIE")>-1) && dom) ? true : false;
var ns4 = (document.layers && !dom) ? true : false;
var ie4 = (document.all && !dom) ? true : false;
var nodyn = (!ns5 && !ns4 && !ie4 && !ie5) ? true : false;

// resize fix for ns4
var origWidth, origHeight;
if (ns4) {
	origWidth = window.innerWidth; origHeight = window.innerHeight;
	window.onresize = function() { if (window.innerWidth != origWidth || window.innerHeight != origHeight) history.go(0); }
}
if (nodyn) { event = "nope" }
var tipFollowMouse= false;	
//var tipWidth= 100;
//var tipWidth= 160;
var offX= 20;	// how far from mouse to show tip
var offY= 12; 
//var tipFontFamily= "Verdana, arial, helvetica, sans-serif";
//var tipFontSize= "7px";
//var tipFontSize= "1";
var tipFontColor= "#000000";
//var tipBgColor= "#DDECFF"; 
var tipBorderColor= "#000080";
var tipBorderWidth= 1;
var tipBorderStyle= "ridge";
var tipPadding= 0;
var messages = new Array();
// start for Promote Your Show
messages[0] = new Array('Trade Show Center Home',"#FFFFCC");
messages[1] = new Array('Featured Show',"#FFFFCC");
messages[2] = new Array('Trade Show listing',"#FFFFCC");
// end for Promote Your Show

// start for Trade Show Alliance
messages[3] = new Array('Featured Show website',"#FFFFCC");
messages[4] = new Array('Banner ad at key locations',"#FFFFCC");
messages[5] = new Array('Customized e-mail alert',"#FFFFCC");
messages[6] = new Array('Ad in leading magazines',"#FFFFCC");
// end for Trade Show Alliance

// start for Microsite
messages[7] = new Array('Micro-site',"#FFFFCC");
messages[8] = new Array('Banner advertisements',"#FFFFCC");
// end for Microsite

//var startStr = '<table width="' + tipWidth + '"><tr><td align="center" width="100%">';
var startStr = '<table cellpadding="1" cellspacing="0" border="0"><tr><td valign="top" align="center">';
//var midStr = '</td></tr><tr><td valign="top" align="center">';
var endStr = '</td></tr></table>';



var tooltip, tipcss;
function initTip() {
	if (nodyn) return;
	tooltip = (ns4)? document.tipDiv.document: (ie4)? document.all['tipDiv']: (ie5||ns5)? document.getElementById('tipDiv'): null;
	tipcss = (ns4)? document.tipDiv: tooltip.style;
	if (ie4||ie5||ns5) {	// ns4 would lose all this on rewrites
		//tipcss.width = tipWidth+"px";
		//tipcss.fontFamily = tipFontFamily;
		//tipcss.fontSize = tipFontSize;
		//tipcss.color = tipFontColor;
		//tipcss.backgroundColor = tipBgColor;
		tipcss.borderColor = tipBorderColor;
		tipcss.borderWidth = tipBorderWidth+"px";
		//tipcss.padding = tipPadding+"px";
		tipcss.borderStyle = tipBorderStyle;
	}
	if (tooltip&&tipFollowMouse) {
		if (ns4) document.captureEvents(Event.MOUSEMOVE);
		document.onmousemove = trackMouse;
	}
}

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

function doTooltip(evt,num) {
	if (!tooltip) return;
	if (t1) clearTimeout(t1);	if (t2) clearTimeout(t2);
	tipOn = true;
	if (messages[num][1])	
	var curBgColor = messages[num][1];
	else curBgColor = tipBgColor;
	if (messages[num][2])	
	var curFontColor = messages[num][2];
	else curFontColor = tipFontColor;
	if (ns4) {
		//var tip = '<table bgcolor="' + tipBorderColor + '" width="' + tipWidth + '" cellspacing="0" cellpadding="' + tipBorderWidth + '" border="0"><tr><td align="center"><table bgcolor="' + curBgColor + '" width="100%" cellspacing="0" cellpadding="' + tipPadding + '" border="0"><tr><td>'+ startStr + midStr + '<span style="font-family:' + tipFontFamily + '; font-size:' + tipFontSize + '; color:' + curFontColor + ';">' + messages[num][0] + '</span>' + endStr + '</td></tr></table></td></tr></table>';
		//var tip = '<table bgcolor="' + tipBorderColor + '" cellspacing="0" cellpadding="0" border="0"><tr><td align="center"><tr><td>'+ startStr + midStr + '<font face="verdana" size="1" color="#000000">' + messages[num][0] + '</font>' + endStr + '</td></tr></table>';
		//var tip =  startStr+midStr+'<font face="verdana" size="1" color="#000000">'+messages[num][0]+'</font>'+endStr;
		var tip =  startStr+'<font face="arial,verdana,helvetica" size="1" color="#000000">'+messages[num][0]+'</font>'+endStr;

		tooltip.write(tip);
		tooltip.close();
	} else if (ie4||ie5||ns5) {
		//var tip = startStr + midStr + '<span style="font-family:' + tipFontFamily + '; font-size:' + tipFontSize + '; color:' + curFontColor + ';">' + '<center>' + messages[num][0] + '</center>' + '</span>' + endStr;
		//var tip = startStr+midStr+'<font face="verdana" size="1" color="#000000">'+ messages[num][0]+'</font>'+endStr;
		var tip = startStr+'<font face="arial,verdana,helvetica" size="1" color="#000000">'+ messages[num][0]+'</font>'+endStr;
		tipcss.backgroundColor = curBgColor;
	 	tooltip.innerHTML = tip;
	}
	if (!tipFollowMouse) positionTip(evt);
	else t1=setTimeout("tipcss.visibility='visible'",100);
}

var mouseX, mouseY;
function trackMouse(evt) {
	mouseX = (ns4||ns5)? evt.pageX: window.event.clientX + document.body.scrollLeft;
	mouseY = (ns4||ns5)? evt.pageY: window.event.clientY + document.body.scrollTop;
	if (tipOn) positionTip(evt);
}

function positionTip(evt) {
	if (!tipFollowMouse) {
		mouseX = (ns4||ns5)? evt.pageX: window.event.clientX + document.body.scrollLeft;
		mouseY = (ns4||ns5)? evt.pageY: window.event.clientY + document.body.scrollTop;
	}
	var tpWd = (ns4)? tooltip.width: (ie4||ie5)? tooltip.clientWidth: tooltip.offsetWidth;
	var tpHt = (ns4)? tooltip.height: (ie4||ie5)? tooltip.clientHeight: tooltip.offsetHeight;
	var winWd = (ns4||ns5)? window.innerWidth-20+window.pageXOffset: document.body.clientWidth+document.body.scrollLeft;
	var winHt = (ns4||ns5)? window.innerHeight-20+window.pageYOffset: document.body.clientHeight+document.body.scrollTop;
	if ((mouseX+offX+tpWd)>winWd) 
		tipcss.left = (ns4)? mouseX-(tpWd+offX): mouseX-(tpWd+offX)+"px";
	else tipcss.left = (ns4)? mouseX+offX: mouseX+offX+"px";
	if ((mouseY+offY+tpHt)>winHt) 
		tipcss.top = (ns4)? winHt-(tpHt+offY): winHt-(tpHt+offY)+"px";
	else tipcss.top = (ns4)? mouseY+offY: mouseY+offY+"px";
	if (!tipFollowMouse) t1=setTimeout("tipcss.visibility='visible'",100);
}

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