var tWin=null;

function Is() {
	var agent = navigator.userAgent.toLowerCase();
	this.major = parseInt(navigator.appVersion);
	this.minor = parseFloat(navigator.appVersion);
	this.ns = ((agent.indexOf('mozilla')!=-1) && ((agent.indexOf('spoofer')==-1) && (agent.indexOf('compatible') == -1)));
	this.ns2 = (this.ns && (this.major == 3));
	this.ns3 = (this.ns && (this.major == 3));
	this.ns4b = (this.ns && (this.minor < 4.04));
	this.ns4 = (this.ns && (this.major == 4));
	this.ns6 = (this.ns && (this.major >= 5));
	this.ie = (agent.indexOf("msie") != -1);
	this.ie3 = (this.ie && (this.major == 2));
	this.ie4 = (this.ie && (this.major == 4));
	this.ie5 = (this.ie && (this.major >= 5));
	this.op3 = (agent.indexOf("opera") != -1);
	this.win = (agent.indexOf("win")!=-1);
	this.mac = (agent.indexOf("mac")!=-1);
	this.unix = (agent.indexOf("x11")!=-1);
}

function initHandlers() {
	usera=new Is();
	if (usera.ie4 || usera.ie5)
		document.body.onselectstart=body_selHandle;
}

function body_selHandle() {
 return false;
}

function popRevista(which) {
 if (tWin!=null && (!tWin.closed)) return;
 tWin=window.open("revista/index.php","tW","outerWidth="+window.screen.availWidth+",outerHeight="+window.screen.availHeight+",toolbar=no,status=no,location=no,resizable=no,menubar=no,scrollbars=no");
}