/**********************************************************************************
PopupDescriptions
*   Copyright (C) 2001 <a href="/dhtmlcentral/thomas_brattli.asp">Thomas Brattli</a>
*   This script was released at DHTMLCentral.com
*   Visit for more great scripts!
*   This may be used and changed freely as long as this msg is intact!
*   We will also appreciate any links you could give us.
*
*   Made by <a href="/dhtmlcentral/thomas_brattli.asp">Thomas Brattli</a>
*********************************************************************************/

function lib_bwcheck(){ //Browsercheck (needed)
	this.ver=navigator.appVersion
	this.agent=navigator.userAgent
	this.dom=document.getElementById?1:0
	this.opera5=this.agent.indexOf("Opera 5")>-1
	this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0;
	this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
	this.ie4=(document.all && !this.dom && !this.opera5)?1:0;
	this.ie=this.ie4||this.ie5||this.ie6
	this.mac=this.agent.indexOf("Mac")>-1
	this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0;
	this.ns4=(document.layers && !this.dom)?1:0;
	this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5)
	return this
}
var bw=new lib_bwcheck()



/**********************************************************************
 Variables to set:
 *********************************************************************/

//How much from the actual mouse X should the description box appear?
fromX = 10
//How much from the actual mouse Y should the description box appear?
fromY = -5

//Makes crossbrowser object.
function makeObj(obj){
   	this.evnt=bw.dom? document.getElementById(obj):bw.ie4?document.all[obj]:bw.ns4?document.layers[obj]:0;
	if(!this.evnt) return false
	this.css=bw.dom||bw.ie4?this.evnt.style:bw.ns4?this.evnt:0;
   	this.wref=bw.dom||bw.ie4?this.evnt:bw.ns4?this.css.document:0;
	this.writeIt=b_writeIt;
	return this
}

// A unit of measure that will be added when setting the position of a layer.
var px = bw.ns4||window.opera?"":"px";

function b_writeIt(text){
	if (bw.ns4){this.wref.write(text);this.wref.close()}
	else this.wref.innerHTML = text
}

//Capturing mousemove
var descx = 0
var descy = 0
function popmousemove(e){descx=bw.ns4||bw.ns6?e.pageX:event.x; descy=bw.ns4||bw.ns6?e.pageY:event.y}

var oDesc;
//Shows the messages
function shownote(num)
{
    if(oDesc)
    {
        oDesc.writeIt('<div id="obj'+num+'" class="clDescription">'+messages[num]+'</div>');
        if(bw.ie5||bw.ie6) descy = descy+document.body.scrollTop;
   	var obj = bw.dom?document.getElementById('obj'+num):bw.ie4?document.all['obj'+num]:bw.ns4?document.layers['obj'+num]:0;
        var posX = descx+fromX;
        var posY = descy+fromY;
        var winW = bw.ie?document.body.clientWidth:window.innerWidth;
        var winH = bw.ie?document.body.clientHeight:window.innerHeight;
        if (posX+obj.offsetWidth > winW)
        {
            posX = document.body.clientWidth-obj.offsetWidth;
            posY = descy;
        }
        if (posY+obj.offsetHeight > winH)
        {
            posY = descy - obj.offsetHeight + fromY;
        }
        oDesc.css.left = (posX)+px;
	oDesc.css.top = (posY)+px;
        oDesc.css.visibility = "visible";
    }
}

//Hides it
function hidenote(){
	if(oDesc) oDesc.css.visibility = "hidden"
}
function setPopup(){
   	if(bw.ns4)document.captureEvents(Event.MOUSEMOVE)
    document.onmousemove = popmousemove;
	oDesc = new makeObj('divDescription')
}