function getCookie(c_name)
{
	if (document.cookie.length>0)
	{ 
		c_start=document.cookie.indexOf(c_name + "=")
		if (c_start!=-1)
			{ 
				c_start=c_start + c_name.length+1 
				c_end=document.cookie.indexOf(";",c_start)
				if (c_end==-1) c_end=document.cookie.length
				return unescape(document.cookie.substring(c_start,c_end))
			} 
	}
	return null
}