var html = document.getElementsByTagName('html')[0];
jscss('add',html,'hasScript');

var hasReqdDOM = (document.getElementsByTagName && document.getElementById);

function PageInit() {
	if ( !(hasReqdDOM) ) return;
	PopUpSafe( document.getElementsByTagName('a') );
}
addEvent(window,'load',PageInit);

function PopUpSafe(els) {
	if (!els) return;
	for (var i = 0; i < els.length; i++) {
		var r = els[i].rel;
		if (r.indexOf(':') >= 0) {
			els[i].onclick = function() { args = this.rel.split(':'); return PopWin(this.href,args[0],args[1],args[2]); }
		}
		else if (r.indexOf("external") >= 0 || r.indexOf("photogallery") >= 0 || r.indexOf("tripplanner") >= 0) {
			els[i].onclick = function() { return PopWin(this.href,r); }
		}
	}
}

var wini; //Reference to a window
function PopWin(url, name, width, height) {
	var s;
	if (width || height) {
		h = (height) ? height : 600;
		w = (width) ? width : 800;
		lp = (screen.width) ? (screen.width-w)/2 : 0;
		tp = (screen.height) ? (screen.height-h)/2 : 0;
		sc = (name == 'gallery') ? 'no' : 'yes';
		s = 'height='+ h +',width='+ w +',top='+tp+',left='+lp+',scrollbars='+sc+',resizable,menubar=1';
	}
	else s = '';
	wini = window.open(url,name,s);
	if (wini) wini.focus();
	return ( !wini )
}// PopWin()

function addEvent(obj,evType,fn){
	if(obj.addEventListener){
		obj.addEventListener(evType,fn,false);
	}
	else if(obj.attachEvent){
		var r=obj.attachEvent("on"+evType,fn);
	}
	else{
		if ( typeof( obj['on'+evType] ) == 'function' ) {
			var last = obj['on'+evType] ;
			obj['on'+evType] = null;
			obj['on'+evType] = function() { last(); fn(); };
		}
		else obj['on'+evType] = fn;
	}
}

function jscss(a,o,c1,c2) {
  switch (a){
    case 'swap':
      o.className=!jscss('check',o,c1)?o.className.replace(c2,c1): o.className.replace(c1,c2);
    break;
    case 'add':
      if(!jscss('check',o,c1)){o.className+=o.className?' '+c1:c1;}
    break;
    case 'remove':
      var rep=o.className.match(' '+c1)?' '+c1:c1;
      o.className=o.className.replace(rep,'');
    break;
    case 'check':
      return new RegExp('\\b'+c1+'\\b').test(o.className)
    break;
  }
}