// Clear a form field.
function clearFormField(elt) {
	if ( elt.defaultValue == elt.value ) {
		elt.value = "";
	}
}

// Popup a new browser window (equivalent to target="_blank")
function popNew(url) {
	popup = window.open(url);
	popup.focus();
}

// Popup a reusable new browser window.
function popExt(url) {
	popup = window.open(url,"ext");
	popup.focus();
}

// Popup a temporary window with a specified width and height.
function popTmp(url,width,height) {
	paramstr = "toolbar=no,directories=no,scrollbars=yes,status=no,menubar=no";
	paramstr += ",width=" + width + ",height=" + height;
	popup = window.open(url,"temp",paramstr);
	popup.focus();
}

// Popup a window of approprite size for viewing a photo.
function popPhoto(url,width,height) {
	paramstr = "toolbar=no,directories=no,scrollbars=yes,status=no,menubar=no";
	if ( width == null ) { width = 625; }
	if ( height == null ) { height = 575; }
	paramstr += ",width=" + width + ",height=" + height;
	popup = window.open(url,"photo",paramstr);
	popup.focus();
}

// Popup a window of approprite size for viewing a photo.
function popVideo(url,width,height) {
	paramstr = "toolbar=no,directories=no,scrollbars=yes,status=no,menubar=no";
	if ( width == null ) { width = 400; }
	if ( height == null ) { height = 400; }
	paramstr += ",width=" + width + ",height=" + height;
	popup = window.open(url,"video",paramstr);
	popup.focus();
}

// Popup a window of approprite size for viewing a show date.
function popEvent(url,width,height) {
	paramstr = "toolbar=no,directories=no,scrollbars=yes,status=no,menubar=no";
	if ( width == null ) { width = 640; }
	if ( height == null ) { height = 540; }
	paramstr += ",width=" + width + ",height=" + height;
	popup = window.open(url,"event",paramstr);
	popup.focus();
}

// Popup a window for viewing info about tracks, albums, etc.
function popInfo(url) {
	paramstr = "toolbar=no,directories=no,scrollbars=yes,status=no,menubar=no";
	var width = 550;
	var height = 500;
	paramstr += ",width=" + width + ",height=" + height;
	popup = window.open(url,"info",paramstr);
	popup.focus();
}

// Popup a window suitable for Google Maps.
function popMap(url) {
	paramstr = "scrollbars=yes,status=yes,toolbar=yes,menubar=yes";
	var width = 700;
	var height = 500;
	paramstr += ",width=" + width + ",height=" + height;
	popup = window.open(url,"map",paramstr);
	popup.focus();
}


// Popup a Flash Audio Player. Override the width and height functions
// in the custom javascript file to change the defaults.
function getFlashAudioPlayerWidth() { return 275; }
function getFlashAudioPlayerHeight() { return 350; }
function popFlashAudioPlayer(file) {
	paramstr = "toolbar=no,directories=no,scrollbars=no,status=no";
	paramstr += ",menubar=no,resizable=no";
	var width = getFlashAudioPlayerWidth();
	var height = getFlashAudioPlayerHeight();
	paramstr += ",width=" + width + ",height=" + height;
	url = "/sitebuilder/flash/audio_player?f=" + file;
	popup = window.open(url,"flashaudioplayer",paramstr);
	popup.focus();
}


// Popup a Flash Photo Scroller. Override the width and height functions
// in the custom javascript file to change the defaults.
function getFlashPhotoScrollerWidth() { return 700; }
function getFlashPhotoScrollerHeight() { return 550; }
function popFlashPhotoScroller(file) {
	var paramstr = "toolbar=no,directories=no,scrollbars=no,status=no";
	paramstr += ",menubar=no,resizable=no";
	var width = getFlashPhotoScrollerWidth();
	var height = getFlashPhotoScrollerHeight();
	paramstr += ",width=" + width + ",height=" + height;
	url = "/sitebuilder/flash/photo_scroller?f=" + file;
	popup = window.open(url,"flashphotoscroller",paramstr);
	popup.focus();
}


// Popup a window for PayPal track purchases.
function popTrackCart(url) {
	var paramstr = "toolbar=no,directories=no,scrollbars=yes,status=no";
	paramstr += ",menubar=no,resizable=yes";
	var width = 800;
	var height = 550;
	paramstr += ",width=" + width + ",height=" + height;
	popup = window.open(url,"paypal",paramstr);
	popup.focus();
}


function getElementsByClassName(oElm, strTagName, strClassName){
	var arrElements = oElm.getElementsByTagName(strTagName);
	var arrReturnElements = new Array();
	strClassName = strClassName.replace(/\-/g, "\\-");
	var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
	var oElement;
	for(var i=0; i<arrElements.length; i++){
		oElement = arrElements[i];      
		if (oRegExp.test(oElement.className)) {
			arrReturnElements.push(oElement);
		}   
	}
	return (arrReturnElements);
}


function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}


function randomTeaser(moduleId,eidArray,eltId) {
	var rand = Math.floor(Math.random() * (eidArray.length));
	var data = new Array();
	var url = "/" + moduleId + "/ajax/teaser?id=" + eidArray[rand];
	var myAjax = new Ajax.Request(url,{
		method:'get',
		parameters:data,
		onComplete:function(originalRequest) {
			var elt = document.getElementById(eltId);
			elt.innerHTML = originalRequest.responseText;
		}
	});
}


function toggleShowHide(eltId,showText,hideText) {
	var elt = document.getElementById(eltId);
	var eltToggle = document.getElementById(eltId + "_t");
	if ( elt.style.display == 'none' ) {
		elt.style.display = 'block';
		eltToggle.innerHTML = hideText;
	}
	else {
		elt.style.display = 'none';
		eltToggle.innerHTML = showText;
	}
}

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_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_findObj(n, d) { //v4.01
  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 && d.getElementById) x=d.getElementById(n); return x;
}

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];}
}