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=/; domain=.yam.com";
}

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);
		  else
		    return c.substring(nameEQ.length,c.length);
	}
	return null;
}


function deleteCookie (name) {
var exp = new Date();
exp.setTime(exp.getTime() - 1);
var cval = readCookie(name);
document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString()+"; path=/; domain=.yam.com";
}