<!--
var XX=0;   
var xstep=1 ;   
var delay_time=10;   
var YY=0;   
var ch=0;   
var oh=0; 
var yon=0;   
var ns4=document.layers?1:0   
var ie=document.all?1:0   
var ns6=document.getElementById&&!document.all?1:0   
if(ie){   
YY=document.body.clientHeight;mbutton.style.top=YY;   
}   
else if (ns4){   
YY=window.innerHeight;   
document.mbutton.pageY=YY;   
document.mbutton.visibility="hidden";   
}   
else if (ns6){   
YY=window.innerHeight   
document.getElementById('mbutton').style.top=YY   
}   
function reloc1()   
{   
if(yon==0){YY=YY-xstep;}   
else{YY=YY+xstep;}   
if (ie){   
ch=document.body.clientHeight;   
oh=mbutton.offsetHeight;   
}   
else if (ns4){   
ch=window.innerHeight;   
oh=document.mbutton.clip.height;   
}   
else if (ns6){   
ch=window.innerHeight   
oh=document.getElementById("mbutton").offsetHeight   
}   
if(YY<0){yon=1;YY=0;}   
if(YY>=(ch-oh)){yon=0;YY=(ch-oh);}   
if(ie){   
mbutton.style.left=XX;   
mbutton.style.top=YY+document.body.scrollTop;   
}   
else if (ns4){   
document.mbutton.pageX=XX;   
document.mbutton.pageY=YY+window.pageYOffset;   
}   
else if (ns6){   
document.getElementById("mbutton").style.left=XX 
document.getElementById("mbutton").style.top=YY+window.pageYOffset   
}   
}   
function onad()   
{   
if(ns4)   
document.mbutton.visibility="visible";   
loopfunc();   
}   
function loopfunc()   
{   
reloc1();   
setTimeout('loopfunc()',delay_time);   
}   
if (ie||ns4||ns6)   
window.onload=onad   
//-->