function init(){
	
	document.getElementById("prod").onmouseover = function(){document.getElementById("sub_prod").style.display = 'block';}; 
	document.getElementById("prod").onmouseout = function(){document.getElementById("sub_prod").style.display = 'none';}; 
	document.getElementById("sub_prod").onmouseout = function(){document.getElementById("sub_prod").style.display = 'none';}; 
	document.getElementById("sub_prod").onmouseover = function(){document.getElementById("sub_prod").style.display = 'block';};

	document.getElementById("bt_sup").onmouseover = function(){document.getElementById("sub_suporte").style.display = 'block';}; 
	document.getElementById("bt_sup").onmouseout = function(){document.getElementById("sub_suporte").style.display = 'none';}; 
	document.getElementById("sub_suporte").onmouseout = function(){document.getElementById("sub_suporte").style.display = 'none';}; 
	document.getElementById("sub_suporte").onmouseover = function(){document.getElementById("sub_suporte").style.display = 'block';};

	
}

window.onload=init