function clearDefault(el) {
  if (el.value==el.value) el.value = "";
}

function setCookie(name, value, expires, path) {
	var exdate=new Date();
  	exdate.setDate(exdate.getDate()+expires);
    document.cookie= name + "=" + escape(value) +
        ((expires) ? "; expires=" + exdate.toGMTString() : "") +
        ((path) ? "; path=" + path : "");
}

function setInfinityCookie(name, value, expires, path) {
	
	var url = window.location.toString();
	var infinity = url.match("infinity")
	
	if (infinity != null)
	{
		if (document.cookie.length>0)
		{
			c_start=document.cookie.indexOf(name + "=");
			if (c_start==-1)
			{
				var exdate=new Date();
				exdate.setDate(exdate.getDate()+expires);
				document.cookie= name + "=" + escape(value) +
					((expires) ? "; expires=" + exdate.toGMTString() : "") +
					((path) ? "; path=" + path : "");
			}
		}
	}
    
}