// Modified from Bill Dortch's Cookie Functions (hidaho.com) 
// (found in JavaScript Bible)
function setCookie(name,value,days,path,domain,secure) {
  var expires, date;
  if (typeof days == "number") {
    date = new Date();
    date.setTime( date.getTime() + (days*24*60*60*1000) );
		expires = date.toGMTString();
  }
  document.cookie = name + "=" + escape(value) +
    ((expires) ? "; expires=" + expires : "") +
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    ((secure) ? "; secure" : "");
}

// Modified from Jesse Chisholm or Scott Andrew Lepera ?
// (found at both www.dansteinman.com/dynapi/ and www.scottandrew.com/junkyard/js/)
function getCookie(name) {
  var nameq = name + "=";
  var c_ar = document.cookie.split(';');
  for (var i=0; i<c_ar.length; i++) {
    var c = c_ar[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameq) == 0) return unescape( c.substring(nameq.length, c.length) );
  }
  return null;
}

// from Bill Dortch's Cookie Functions (hidaho.com) 
function deleteCookie(name,path,domain) {
  if (getCookie(name)) {
    document.cookie = name + "=" +
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      "; expires=Thu, 01-Jan-70 00:00:01 GMT";
  }
}

function popUp(url, width, height){
	options = "status=no,scrollbars=no,";
	var leftPos = (screen.availWidth - width) / 2;
	var topPos = (screen.availHeight - height) / 2;
	options += 'width=' + ((parseInt(width)) + 20) + ',height=' + ((parseInt(height)) + 25) + ',left=' + leftPos + ',top=' + topPos;
	window.open(url, '', options);
}

function backClose(){
	h = window.history; 
	if ( h.length > 1 ) { // if there is a history 
    	h.back();     // equivalent to clicking back button 
	} else window.close();
}

function showHideLink(id, showText, hideText){
	text = document.getElementById("link_box_d" + id);
	link = document.getElementById("link_box_l" + id);
	
	if(text.style.display != "block"){
		text.style.display = "block";
		link.firstChild.nodeValue = hideText;
	} else {
		text.style.display = "none";
		link.firstChild.nodeValue = showText;
	}
}