function init(){

	document.getElementById("btProd").onmouseover = function(){document.getElementById("sub_prod").style.display = 'block';}; 
	document.getElementById("btProd").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';};
	
	/*SUB MENU INST*/
	
/*document.getElementById("btInst").onmouseover = function(){document.getElementById("sub_inst").style.display = 'block';}; 
	document.getElementById("btInst").onmouseout = function(){document.getElementById("sub_inst").style.display = 'none';}; 
	document.getElementById("sub_inst").onmouseout = function(){document.getElementById("sub_inst").style.display = 'none';}; 
	document.getElementById("sub_inst").onmouseover = function(){document.getElementById("sub_inst").style.display = 'block';};*/
	
}

window.onload=init