function browser_name() {
		var browser_name = navigator.appName;
		return browser_name;
	}

	function browser_version() {
		var browser_version = parseFloat(navigator.appVersion);
		return browser_version;
	}

	function browser_os() {
		if(navigator.appVersion.indexOf("Win95") > 0) return "WIN95";
		else if(navigator.appVersion.indexOf("Win16") > 0) return "WIN31";
		else if(navigator.appVersion.indexOf("WinNT") > 0) return "NT";
		else if(navigator.appVersion.indexOf("Mac") > 0) return "MAC";
		else if(navigator.appVersion.indexOf("UNIX") > 0) return "UNIX";
		else return "UNKNOWN";
	}

var browserOk = false;

if (browser_name() == "Netscape" && browser_version() >= 3.0) browserOk = true;
else if (browser_name() == "Microsoft Internet Explorer" && browser_version() >= 3.0) browserOk = true;
else if (browser_name() == "Opera") browserOk = true;

function chg_button(titlename, onoff) 
{
	if (browserOk == true) {
			document[titlename].src = "images/button_" + titlename + "_" + onoff + ".gif"
	}
}

function makeArray(n){
  this.length = n;
  for (i=1;i<=n;i++){
    this[i]=0;
  }
  return this;
}

function displayDate() {
  var this_month = new makeArray(12);
    this_month[0]  = "January";
    this_month[1]  = "February";
    this_month[2]  = "March";
    this_month[3]  = "April";
    this_month[4]  = "May";
    this_month[5]  = "June";
    this_month[6]  = "July";
    this_month[7]  = "August";
    this_month[8]  = "September";
    this_month[9]  = "October";
    this_month[10] = "November";
    this_month[11] = "December";
  var today = new Date();
  var day   = today.getDate();
  var month = today.getMonth();
  var year  = today.getFullYear();
  document.write(this_month[month]+" "+day+", "+year);
}

function enlarge (photo_id,project_id) {
	new_window = window.open ("enlargement.asp?photo_id="+photo_id+"&project_id="+project_id,"a" + photo_id + "_" + project_id + "a","width=700,height=500,toolbar=no,location=no,scrollbars=yes,directories=no,menubar=no,resizable=yes");
}


function open_popup (page,w,h) {

date = new Date();
counter = Math.floor((date.getSeconds()/60)*100);

	new_window = window.open (page,"a" + counter + "a","width="+w+",height="+h+",toolbar=no,location=no,scrollbars=no,directories=no,menubar=no,resizable=no");
}


function cent(amount) {
    amount -= 0;
    amount = (Math.round(amount*100))/100;
    return (amount == Math.floor(amount)) ? amount + '.00' : (  (amount*10 == Math.floor(amount*10)) ? amount + '0' : amount);
}