function browserCheck(){ 
this.ver=navigator.appVersion;
this.agent=navigator.userAgent;
this.dom=document.getElementById?1:0;
this.opera6=((this.agent.indexOf("Opera 6")>-1) && this.dom)?1:0;
this.ie5=((this.ver.indexOf("MSIE 5")>-1) && this.dom && !this.opera6)?1:0; 
this.ie6r=((this.ver.indexOf("MSIE 6")>-1) && this.dom && (document.compatMode == "BackCompat"))?1:0;
this.ie6s=((this.ver.indexOf("MSIE 6")>-1) && this.dom && (document.compatMode == "CSS1Compat"))?1:0;
this.ie4=(document.all && !this.dom)?1:0;
this.ie=(this.ie4||this.ie5||this.ie6r||this.ie6s)?1:0;
this.mac=(this.agent.indexOf("Mac")>-1)?1:0;
this.ns6=(this.dom && (parseInt(this.ver) >= 5)) ?1:0; 
this.ns4=(document.layers && !this.dom)?1:0;
this.ns=(this.ns4||this.ns6)?1:0;
this.bw5=(this.ie5||this.ie6r)?1:0;
this.bw6=(this.ie6s||this.ns6||this.opera6)?1:0;
this.bw=(this.ie6r||this.ie6s||this.ie5||this.ns6||this.opera6)?1:0;
return this;
}
var ENMarginTop, ENMarginBottom, ENTop;
var ENDivName, ENObject, ENCurrentY;
function Move(id, mt, mb, tp)
{
bw=new browserCheck;
if (bw.bw) {
ENDivName = bw.bw5 ? document.all(id) : bw.bw6 ? document.getElementById(id) : 0;
ENObject = ENDivName.style;
ENObject.position = 'absolute';
ENMarginTop = mt ? mt : 0;
ENMarginBottom = mb ? mb : 0;
ENCurrentY = ENTop = tp ? tp : ENDivName.offsetTop;
ENSmoothMove();
} 
}
function ENSmoothMove()
{
var winh = bw.ie6s ? document.documentElement.clientHeight : (bw.ns6||bw.opera6) ? innerHeight : bw.bw5 ? document.body.clientHeight : 0 ;
var yt = bw.ie6s ? document.documentElement.scrollTop : bw.bw5 ? document.body.scrollTop : (bw.ns6||bw.opera6) ? window.pageYOffset : 0;
var divh = ENDivName.offsetHeight;
if (winh >= ENMarginTop + divh + ENMarginBottom) {
yt = Math.max(yt + ENMarginTop, ENTop);
} else {
var yt1 = Math.max(yt + ENMarginTop, ENTop);
var f1 = (yt1 > ENCurrentY) ? 1 : 0;
var yt2 = yt - (divh + ENMarginBottom - winh);
yt2 = Math.max(yt2, ENTop);
var f2 = (yt2 < ENCurrentY) ? 1 : 0;
if (f1 && f2) yt = ENCurrentY;
else yt = f2 ? Math.max(yt1, yt2) : Math.min(yt1, yt2);
}
if (yt != ENCurrentY) {
var vy = (yt - ENCurrentY) * 0.25;
if (Math.abs(vy) < 1) vy = (vy > 0) ? 1 : (vy < 0) ? -1 : 0;
ENCurrentY += Math.round(vy);
ENObject.top = ENCurrentY + 'px';
}
setTimeout('ENSmoothMove()', 50);
}