Floating box in javascript

Learn how to create floating windows in JavaScript.

Floating box in javascript
///paste in ur css file

#topbar{
position:absolute;
border: 1px solid black;
padding: 2px;
background-color: #CACAFF;
width: 620px;
visibility: hidden;
z-index: 100;
}

///paste your content in js file
var persistclose=0 //set to 0 or 1. 1 means once the bar is manually closed, it will remain closed for browser session
var startX = 30 //set x offset of bar in pixels
var startY = 5 //set y offset of bar in pixels
var verticalpos="fromtop" //enter "fromtop" or "frombottom"

function iecompattest(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function get_cookie(Name) {
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) {
offset += search.length
end = document.cookie.indexOf(";", offset);
if (end == -1) end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(offset, end))
}
}
return returnvalue;
}

function closebar(){
if (persistclose)
document.cookie="remainclosed=1"
document.getElementById("topbar").style.visibility="hidden"
}

function staticbar(){
barheight=document.getElementById("topbar").offsetHeight
var ns = (navigator.appName.indexOf("Netscape") != -1) || window.opera;
var d = document;
function ml(id){
var el=d.getElementById(id);
if (!persistclose || persistclose && get_cookie("remainclosed")=="")
el.style.visibility="visible"
if(d.layers)el.style=el;
el.sP=function(x,y){this.style.left=x+"px";this.style.top=y+"px";};
el.x = startX;
if (verticalpos=="fromtop")
el.y = startY;
else{
el.y = ns ? pageYOffset + innerHeight : iecompattest().scrollTop + iecompattest().clientHeight;
el.y -= startY;
}
return el;
}
window.stayTopLeft=function(){
if (verticalpos=="fromtop"){
var pY = ns ? pageYOffset : iecompattest().scrollTop;
ftlObj.y += (pY + startY - ftlObj.y)/8;
}
else{
var pY = ns ? pageYOffset + innerHeight - barheight: iecompattest().scrollTop + iecompattest().clientHeight - barheight;
ftlObj.y += (pY - startY - ftlObj.y)/8;
}
ftlObj.sP(ftlObj.x, ftlObj.y);
setTimeout("stayTopLeft()", 10);
}
ftlObj = ml("topbar");
stayTopLeft();
}

if (window.addEventListener)
window.addEventListener("load", staticbar, false)
else if (window.attachEvent)
window.attachEvent("onload", staticbar)
else if (document.getElementById)
window.onload=staticbar

/////paste below content in your htl page

hello

<div id="leftSideBar" style="position:absolute;">
content here!
</div>

<script language="javascript">
<!--

function floatSideBar(bY,lPY) { //boxY, lastPageY
//pageY, pageHeight, boxHeight, boxId
var pY,pH,bH,id=\'leftSideBar\';

pY=(navigator.appName.indexOf("Netscape")!=-1)?pageYOffset:nn&&document.html.scrollTop?document.html.scrollTop:document.body.scrollTop;
if(pY!= lPY) { //they scrolled

//pH = document.body.offsetHeight;
//else if (document.layers) pH = window.innerHeight;
pH = 700;
bH = document.getElementById(id).offsetHeight;

if(pY < bY) { //need to move box up
bY = pY;
document.getElementById(id).style.top = bY+\'px\';
}
else if(pY + pH > bY + bH) { //need to move box down
bY = pY + pH - bY;
document.getElementById(id).style.top = bY+\'px\';
}
}

setTimeout('floatSideBar(\'+bY+\',\'+pY+\')',100);
};

floatSideBar(140,0);

//-->
</script>

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