function greatSize(m,i){
	document.getElementById("img_1").src="image/editorial1.jpg";
	document.getElementById("img_3").src="image/advertising1.jpg";
	document.getElementById("img_4").src="image/portrait1.jpg";
	document.getElementById(m).src = "image/"+i+"";
	createCookie("menuativo",m,1);
}

function IsIE()
{
	Brw = navigator.appName;
			if(Brw.indexOf("Microsoft") > -1)
				return true;
			else
				 return false;	
	
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return false;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}