ns4 = (document.layers)? true:false
ie4 = (document.all)? true:false
ie5=(ie4 && (navigator.userAgent.indexOf('MSIE 5')>0 || navigator.userAgent.indexOf('MSIE 6')>0));

document.onmousemove = mueve
function mueve(e){
	if (ns4) {x=e.pageX; y=e.pageY;}
	if (ie4) {x=event.x; y=event.y;}
	if (ie5) {x=event.x+document.body.scrollLeft; y=event.y+document.body.scrollTop;}
but.style.top= y-10
but.style.left = x
}

function show(num) {

but.value = num
but.style.height = 20
but.style.width = 100

}
function hide() {
but.value = ""
but.style.height = 0
but.style.width = 0

}