function isMsExplorer () {
	return (window.navigator.appVersion.indexOf('MSIE') >= 0);
}

function setOpacity (o, val) {
	if (isMsExplorer()) {
		o.filters.alpha.opacity = val;
	} else {
		// Mozilla Firefox
		o.style.opacity = val/100;
	}
}

function getBrowserInfo () {
	var navInfo = '';
	for (i in window.navigator) {
		navInfo = navInfo + i + '=' + window.navigator[i] + '\n';
	}
	alert(navInfo);
}

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


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 "";
}