function getUrlParam(paramName)
{
	var paramsStr = document.location.search;

	if (paramsStr.length > 1)
	{
		paramsStr = paramsStr.substring(1);
		var params = paramsStr.split("&");
		for (var i = 0; i < params.length; i++)
		{
			paramToks = params[i].split("=");
			if (paramToks.length > 1)
			{
				var paramKey = paramToks[0];
				if (paramKey == paramName)
				{
					var paramVal = paramToks[1];
					paramVal = paramVal.replace(/\+/g, " ");
					paramVal = paramVal.replace(/%20/g, " ");
					return paramVal;
				}
			}
		}
	}
	return null;
}

function setCookieByDays(name, value, days, path, domain, secure)
{
	if (days != 0)
	{
		var exp = null;
		if (days != null)
		{
			exp = new Date();
			exp.setTime(exp.getTime() + days * (24 * 60 * 60 * 1000)); 
		}
		setCookie(name, value, exp, path, domain, secure);
	}
}

function setCookie(name, value, expires, path, domain, secure)
{
	var curCookie = name + "=" + escape(value) +
		((expires) ? "; expires=" + expires.toGMTString() : "") +
		((path) ? "; path=" + path : "") +
		((domain) ? "; domain=" + domain : "") +
		((secure) ? "; secure" : "");
	document.cookie = curCookie;
}


function getCookie(name)
{
	var dc = document.cookie;
	var prefix = name + "=";
	var begin = dc.indexOf("; " + prefix);
	if (begin == -1)
	{
		begin = dc.indexOf(prefix);
		if (begin != 0) return null;
	}
	else begin += 2;

	var end = document.cookie.indexOf(";", begin);
	if (end == -1)
		end = dc.length;
	return unescape(dc.substring(begin + prefix.length, end));
}


function deleteCookie(name, path, domain)
{
	if (getCookie(name))
	{
		document.cookie = name + "=" +
		((path) ? "; path=" + path : "") +
		((domain) ? "; domain=" + domain : "") +
		"; expires=Thu, 01-Jan-70 00:00:01 GMT";
	}
}

function fixDate(date)
{
	var base = new Date(0);
	var skew = base.getTime();
	if (skew > 0)
		date.setTime(date.getTime() - skew);
}