function getMyCookie(c_name){
	var i,x,y,ARRcookies=document.cookie.split(";");
	for (i=0;i<ARRcookies.length;i++){
		x=ARRcookies[i].substr(0,ARRcookies[i].indexOf("="));
		y=ARRcookies[i].substr(ARRcookies[i].indexOf("=")+1);
		x=x.replace(/^\s+|\s+$/g,"");
		if (x==c_name){
			return unescape(y);
    	}
  	}
}
function popup(){
	if ( getMyCookie('popup') != 'disabled' ){
		document.getElementById('greyback').style.display="block";
		document.getElementById('popup').style.display="block";
		document.cookie="popup=disabled";
	}
}
function popdown(){
	document.getElementById('popup').style.display="none";
	document.getElementById('greyback').style.display="none";
}