document.attachEvent("onkeydown", presskey);
document.attachEvent("onkeyup", relasekey);

var setPOPlog
var keycode = ""

var presctrl = false

function presskey(e){
	
	var code = (document.all) ? event.keyCode:e.which;
	var ctrl = (document.all) ? event.ctrlKey:e.modifiers & Event.CONTROL_MASK;
//	alert(code)
	if (document.all){
		if (ctrl && code==16){
			presctrl = true
			document.getElementById("entrata").style.visibility = "visible"
		}
	}
}

function relasekey(e){
	if(!e)e = window.event;
	presctrl = false
	document.getElementById("entrata").style.visibility = "hidden"
}