var browser = null;
browser = check_browser();
function iopen(url)
{
	window.open(url);
}
function openIt(addr)
{
	 window.open(addr);
}
function check_browser()
{
	var agent = null;
	agent     = navigator.userAgent;

	var ie      = new RegExp('MSIE');
	var mozilla = new RegExp('Firefox');
	var opera   = new RegExp('Opera');

	if(ie.test(agent))
	{
		return "ie";
	} else if(mozilla.test(agent)) {
		return "mozilla";
	} else if(opera.test(agent)) {
		return "opera";
	} else {
		return "unknow";
	}
}