function mvment(evt){
	evt = evt || window.event; // event object
	target = evt.target || window.event.srcElement; // event target
	targetID = target.getAttribute("id"); // event target id
	clearTimeout(tempo);
	tempo=setTimeout('apres_tempo()',200);
}
function apres_tempo(){
	if ((targetID=="menu_eva")||(target.getAttribute("className")=="optim_inv")||(target.getAttribute("class")=="optim_inv")){
		document.getElementById('div_eva').setAttribute("class","optim_vis");
		document.getElementById('div_eva').setAttribute("className","optim_vis");
	}
	else{
		document.getElementById('div_eva').setAttribute("class","optim_inv");
		document.getElementById('div_eva').setAttribute("className","optim_inv");
		document.getElementById('tab_eva').borderStyle="1px";
	}
}
document.getElementById('div_eva').setAttribute("class","optim_inv");
document.getElementById('div_eva').setAttribute("className","optim_inv");
document.getElementById('tab_eva').setAttribute("borderStyle","none");
var tempo = null;
window.onload = function() {
	document.onmousemove = function(evt) { // set onclick event via anonymous function
												mvment(evt)
											 };
}