function footnote()
{
var windowHeight=0;
if (typeof(window.innerHeight)=='number') {
windowHeight=window.innerHeight;
} else {
if (document.documentElement&&
document.documentElement.clientHeight) {
windowHeight=document.documentElement.clientHeight;
} else {
if (document.body&&document.body.clientHeight) {
windowHeight=document.body.clientHeight;
 } } }
if ( window.toplimit == undefined)
{ 
toplimit = thediv.style.top; 
} 
thediv.style.top = toplimit; 
footer = (windowHeight-30);                                                    
limit = toplimit.replace("px", "");
if (footer > limit) {
thediv.style.top = footer; 
}
}