var dl = document.location;

var xdoc = document.body.clientWidth;
var resolution = 'default';
if (xdoc < 800) {
	resolution = 'small';
} else if ((xdoc < 1024) && (xdoc > 800)) {
	resolution = 'medium';
} else if (xdoc > 1024) {
	resolution = 'large';
}

function setCookie(name, value) { 
	var valueEscaped = escape(value); 
	var expiresDate = new Date(); 
	expiresDate.setTime(expiresDate.getTime() + 365 * 24 * 60 * 60 * 1000);
	var expires = expiresDate.toGMTString(); 
	var newCookie = name + "=" + valueEscaped + "; path=/; expires=" + expires; 
	if (valueEscaped.length <= 4000) document.cookie = newCookie + ";"; 
} 

setCookie('resolution',resolution);

document.location = dl;