function moveLayer(evt) {
//document.getElementById("alt_dinamico").style.left = evt.clientX + 10 + 'px';
//document.getElementById("alt_dinamico").style.top = evt.clientY + 10 + 'px';


	  if (document.all) {
	    tempX = event.clientX + document.documentElement.scrollLeft; 
	    tempY = event.clientY + document.documentElement.scrollTop ;
	  } else {
	    tempX = evt.pageX; 
	    tempY = evt.pageY;
	  }

document.getElementById("alt_dinamico").style.left = (tempX + 10 )+ 'px';
document.getElementById("alt_dinamico").style.top = (tempY+ 10 ) + 'px';

}

function mostra(x,y){
document.getElementById("alt_dinamico").style.width=y;
document.getElementById("alt_dinamico").innerHTML=x;
document.getElementById("alt_dinamico").style.display='block';
}

function oculta(){
document.getElementById("alt_dinamico").style.display='none';
}