var timev = 100;
var max_time = 500;
var timer_increment = 50;




function pul_over(pul_name){
timev = 100;
p_sec = document.getElementById("pul_" + pul_name).style;
p_sec.opacity=.5;
p_sec.filter = 'alpha(opacity=50)';
// FlashElement();
}



function pul_out(pul_name){
p_sec.opacity=1;
p_sec.filter = 'alpha(opacity=100)';
} 


function azienda(divname){

document.getElementById("div_azienda_storia").style.display="none";
document.getElementById("azienda_storia").src="img/menu/azienda/storia.png";

document.getElementById("div_azienda_produzione").style.display="none";
document.getElementById("azienda_produzione").src="img/menu/azienda/produzione.png";

document.getElementById("div_azienda_servizio").style.display="none";
document.getElementById("azienda_servizio").src="img/menu/azienda/servizio.png";

document.getElementById("div_azienda_"+divname).style.display="block";
document.getElementById("azienda_"+divname).src="img/menu/azienda/"+divname+"_sel.png";
} 


function FlashElement() {
timev = timev + timer_increment;

if (timev > max_time){
p_sec.opacity=1;
p_sec.filter = 'alpha(opacity=100)';
return;
}

opacityfactor = timev / max_time;
p_sec.opacity=opacityfactor;
p_sec.filter = 'alpha(opacity='+ opacityfactor*100 +')';
setTimeout("FlashElement()", timer_increment)
}