function init(){

	document.getElementById("btProd").onmouseover = function(){document.getElementById("subProd").style.display = 'block';}; 
	document.getElementById("btProd").onmouseout = function(){document.getElementById("subProd").style.display = 'none';}; 
	document.getElementById("subProd").onmouseout = function(){document.getElementById("subProd").style.display = 'none';}; 
	document.getElementById("subProd").onmouseover = function(){document.getElementById("subProd").style.display = 'block';};
	
	document.getElementById("btImprensa").onmouseover = function(){document.getElementById("subImprensa").style.display = 'block';}; 
	document.getElementById("btImprensa").onmouseout = function(){document.getElementById("subImprensa").style.display = 'none';}; 
	document.getElementById("subImprensa").onmouseout = function(){document.getElementById("subImprensa").style.display = 'none';}; 
	document.getElementById("subImprensa").onmouseover = function(){document.getElementById("subImprensa").style.display = 'block';};
	
	document.getElementById("btrh").onmouseover = function(){document.getElementById("sub_rh").style.display = 'block';}; 
	document.getElementById("btrh").onmouseout = function(){document.getElementById("sub_rh").style.display = 'none';}; 
	document.getElementById("sub_rh").onmouseout = function(){document.getElementById("sub_rh").style.display = 'none';}; 
	document.getElementById("sub_rh").onmouseover = function(){document.getElementById("sub_rh").style.display = 'block';};
	
}

window.onload=init