/*
$Revision: 21840 $
$Workfile: js_common.js $
$Author: pwhittemore $
$Modtime: 25 10 05 16:06 $ 
*/

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}


function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

// no longer used by trips, but references (may) exist in CMS pages
function FormActionFreetext(f_name) { 
    document.forms[f_name].action='/index.cfm/fa/home.textsearch/search_text/'+escape(document.forms[f_name].search_text.value);
    document.forms[f_name].submit();
}

function FormActionProperty(prop_url_key) {
    document.propertyform.action='/index.cfm/'+prop_url_key+'/'+escape(document.propertyform[prop_url_key].value);
    document.propertyform.submit();
}

// Added new version of FormActionProperty to take into account request.thisSiteVD only used for French site so far - Dan 07/09/2005
function FormActionPropertyVD(thisSiteVD,prop_url_key) {
    document.propertyform.action=thisSiteVD+'/index.cfm/'+prop_url_key+'/'+escape(document.propertyform[prop_url_key].value);
    document.propertyform.submit();
}


//This function checks whether the required form field (text) has a value
function validRequired(formField,Message) {
	var result = true;
	if (formField != null && formField.value == "") {
		alert(Message);
		formField.focus();
		result = false;
	}
	return result;
}

// function used by help pop-ups
var popupWinHelp;
function popupWindow(targ) {
	var popup = new Object;
	popup.url=targ;
	var winOpts='scrollbars=yes,width=350,height=350,resizable=yes,toolbar=no,location=no';
	if (popupWinHelp==null || popupWinHelp.closed) {
		popupWinHelp=window.open(popup.url,'popup',winOpts);
	} else {
		popupWinHelp.focus(popup.url,'popup',winOpts);
		popupWinHelp.open(popup.url,'popup',winOpts);
	}
}

function popupWindow2(url, f_width, f_height,f_resizable,f_scrollbars,winname) {	
	var f_left=0, f_top=0;
	if(screen){
		f_left=(screen.width-f_width)/2;
		f_top=(screen.height-f_height)/2;
	} 
	popup=open(url, winname, 'resizable='+f_resizable+',scrollbars='+f_scrollbars+',width='+f_width+',height='+f_height+',left='+f_left+',top='+f_top);
	popup.focus();
}

function openWindow(page,width,height,scrolling){
	var winWidth = width;
	var winHeight = height;
	var posLeft = (screen.availWidth - winWidth) / 2;
	var posTop = (screen.availHeight - winHeight) / 2;
	var winInfo = 'width=' + winWidth + ',height=' + winHeight + ',left=' + posLeft + ',top=' + posTop + ',location=no,menubar=no,toolbar=no,status=no,scrollbars=' + scrolling + ',resizable=yes';
	var poplaunch = window.open(page, 'poplaunch', winInfo);
        poplaunch.focus();
}

function resetVisibleFields(myform) {
	var f 	= document.forms[myform];
	var ln 	= f.elements.length;

	for (var i = 0; i < ln; i++) {
		var e = f.elements[i];
		var t = e.type;

		if (t == 'checkbox') {
			e.checked = false;
		} else if (t=='radio') {
			if (e.value == -1 || e.value == '') {
				e.checked = true; // -1 or '' are assumed to be the defulat "CHECKED" radio...
			} else {
				e.checked = false;			
			}
		} else if (t == 'text' || t == 'textarea' || t == 'password') {
			e.value = '';
		} else if (t == 'select-one' || t == 'select-multiple') {
			e.options[0].selected = true;
			for (var j = 0; j < e.length; j++) {
				e.options[j].selected = false;
			}
		}
	}
	return false;
}

function resetAllFields(myform) {
	var f 	= document.forms[myform];
	var ln 	= f.elements.length;

	for (var i = 0; i < ln; i++) {
		var e = f.elements[i];
		var t = e.type;

		if (t == 'checkbox') {
			e.checked = false;
		} else if (t=='radio') {
			if (e.value == -1 || e.value == '') {
				e.checked = true; // -1 or '' are assumed to be the defulat "CHECKED" radio...
			} else {
				e.checked = false;			
			}
		} else if (t == 'text' || t == 'textarea' || t == 'password' || t == 'hidden') {
			e.value = '';
		} else if (t == 'select-one' || t == 'select-multiple') {
			e.options[0].selected = true;
			for (var j = 0; j < e.length; j++) {
				e.options[j].selected = false;
			}
		}
	}
	return false;
}

function t2setCookie(name, value, expires, path, domain, secure) {
	var curCookie = name + '=' + escape(value) 
		+	((expires.length > 0) ? '; expires=' + expires.toGMTString() : '')
		+	((path) ? '; path=' + path : '')
		+	((domain) ? '; domain=' + domain : '')
		+	((secure) ? '; secure' : '');
	document.cookie = curCookie;
}

function t2getCookie(name) {
	var dc = document.cookie;
	var prefix = name + '=';
	var begin = dc.indexOf('; ' + prefix);
	if (begin == -1) {
		begin = dc.indexOf(prefix);
		if (begin != 0) {
			return null;
		}
	} else {
		begin += 2;
	}
	var end = document.cookie.indexOf(';', begin);
	if (end == -1) {
		end = dc.length;
	}
	return unescape(dc.substring(begin + prefix.length, end));
}

// Rudimentary Browser Detection
IE4plus = (document.all) ? true : false;

/* ***************************
** Provided by
** Andrew Clover (and at doxdesk dot com)
** http://and.doxdesk.com/ 
** http://worldtimzone.com/blog/date/2002/09/24

Way to make form field entries URL-safe and also needed to support multiple languages. The JavaScript escape() function fixes ASCII characters that are not valid for use in URLs, but does not handle unicode characters well. 

The encodeURIComponent() function introduced in IE5.5, Netscape 6, and Mozilla does exactly what is needed. However, since the function is unavailable in Netscape 4.x and IE5, a different solution is needed. encodeURIComponentNew() created to properly escape characters for use in the URL.
*/

function utf8(wide) {
  var c, s;
  var enc = "";
  var i = 0;
  while(i<wide.length) {
    c= wide.charCodeAt(i++);
    // handle UTF-16 surrogates
    if (c>=0xDC00 && c<0xE000) continue;
    if (c>=0xD800 && c<0xDC00) {
      if (i>=wide.length) continue;
      s= wide.charCodeAt(i++);
      if (s<0xDC00 || c>=0xDE00) continue;
      c= ((c-0xD800)<<10)+(s-0xDC00)+0x10000;
    }
    // output value
    if (c<0x80) enc += String.fromCharCode(c);
    else if (c<0x800) enc += String.fromCharCode(0xC0+(c>>6),0x80+(c&0x3F));
    else if (c<0x10000) enc += String.fromCharCode(0xE0+(c>>12),0x80+(c>>6&0x3F),0x80+(c&0x3F));
    else enc += String.fromCharCode(0xF0+(c>>18),0x80+(c>>12&0x3F),0x80+(c>>6&0x3F),0x80+(c&0x3F));
  }
  return enc;
}

var hexchars = "0123456789ABCDEF";

function toHex(n) {
  return hexchars.charAt(n>>4)+hexchars.charAt(n & 0xF);
}

var okURIchars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-";

function encodeURIComponentNew(s) {
  var s = utf8(s);
  var c;
  var enc = "";
  for (var i= 0; i<s.length; i++) {
    if (okURIchars.indexOf(s.charAt(i))==-1)
      enc += "%"+toHex(s.charCodeAt(i));
    else
      enc += s.charAt(i);
  }
  return enc;
}

function switchEncodeURI(fld)
{
	if (fld == "") return false;
	var encodedField = "";
	var s = fld;
	if (typeof encodeURIComponent == "function")
	{
		// Use JavaScript built-in function
		// IE 5.5+ and Netscape 6+ and Mozilla
		encodedField = encodeURIComponent(s);
	}
	else 
	{
		// Need to mimic the JavaScript version
		// Netscape 4 and IE 4 and IE 5.0
		encodedField = encodeURIComponentNew(s);
	}
	return encodedField;
}

//Accessible new window for advertiser section
function adv_spawn(URL,winName) {

//defaults
var availWidth = 770;
var availHeight = 400;

//reduce by 80%
if(screen) {
availWidth = (screen.width/100)*80;
availHeight = (screen.height/100)*80;
}

/*features example - note you must pass in width & height first (IE 4+ Mac bug) width=620,height=460,directories=no,location=no,menubar=no,scrollbars=yes,toolbar=no,status=no,resizable=no,top=0,left=0*/

var newWindow=window.open(URL,winName,'width='+availWidth+',height='+availHeight+',directories=no,location=no,menubar=no,scrollbars=yes,toolbar=no,status=no,resizable=yes,top=10,left=10');

newWindow.focus();
}
function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
	document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function MM_findObj(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
	d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
	if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
	obj.visibility=v; }
}


// function to attach event listeners to dom objects
function attachEventListener(targetObject, eventType, functionToAttach, useCapture) {
	if (targetObject.addEventListener) {
		targetObject.addEventListener(eventType, functionToAttach, useCapture);
		return true;
	} else if (targetObject.attachEvent) {
		var r = targetObject.attachEvent("on" + eventType, functionToAttach);
		return r;
	} 
} 

// look for the longtext content and make it visible
if (!regionExtraTextLoaded) {
    // set a global var to indicate wether text was moved already
    // (necessary due to overlapping js implementations)
    var regionExtraTextLoaded = false;
}
if (!regionExtraTextLoaded) {
    attachEventListener(window, "load", function() {
        var div = document.getElementById("regionExtraText");
        
        // make sure there really is content
        if (div && div.innerHTML.length > 10) {
            // find the target for the longtext
            var target = document.getElementById("containerBody")
                || document.getElementById("contentBody")            //CR & HR SS
                || document.getElementById("contentarea")            // HR db
                || document.getElementById("regionExtraTextWrapper") // VV
                || document.getElementsByTagName("BODY")[0];         // failsafe
            
           // move div to target and make visible
            target.appendChild(div);
            div.id = "regionExtraTextView";
            regionExtraTextLoaded = true;
        }
    });
}