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_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];}
}


function courseImgSwap(img){
	var d = document.getElementById('quad').src;
	var l = d.length;
	var p = d.indexOf('images');
	var s = d.substr(p, l-p);
	
	if(s == 'images/icon_quadrants.jpg'){
		document.getElementById('quad').src = img;
		
	} else {
		document.getElementById('quad').src = 'images/icon_quadrants.jpg';
		
	}
}

// home page tab functions
function tabSet(id) {
    document.currenttab=id;
    var d = document.getElementById(id);
    d.className='TabActive';
}
function tabSwap(id) 
{
  var agt = navigator.userAgent.toLowerCase()
  if (agt.indexOf("mozilla/5.0") == -1)
  {
    if (document.currenttab!=id) {
        var d = document.getElementById(id);
        d.className='TabHover';
    }
  }
}
function tabRestore(id){
    if (document.currenttab!=id) {
        setTabRestore(id);
    }
}
function tabClick(id, pnlid) {
    if (document.currenttab!=id) {
        setTabRestore(document.currenttab);
        contentHide(document.currentcontent);
    }
    tabSet(id);
    contentShow(pnlid);
}

function setTabRestore(id) {
        var d = document.getElementById(id);
        d.className='TabDefault';
}

function contentShow(id) {
        var d = document.getElementById(id);
        d.style.display='block';
        document.currentcontent=id;
}
function contentHide(id) {
        var d = document.getElementById(id);
        d.style.display='none';
}
//end home page tab functions


//finds an id in a document and switches its display property between hidden and block
function showhide(id) {
    var d = document.getElementById(id);
    if (d.style.display=="none") {
        d.style.display="block";
    } else {
        d.style.display="none";
    }
}

//opens a print window
function OpenPrintWindow(URL) {
    if (URL.indexOf("?") > 0) {
            URL += "&print=true"
    } else {
            URL += "?print=true"
    }
    window.open(URL ,'printwin','resizable=1,scrollbars=1,toolbar=1');
}   

function PrintWindow() {
    window.focus();
    window.print();
}


function ShowInstructorBio(name, position) {
    var pnl = document.getElementById(name);
	pnl.style.visibility='visible';
    pnl.style.top=position + 'px';
    pnl.style.overflow='auto';
}
function HideInstructorBio(name) {
    var pnl = document.getElementById(name);
    pnl.style.visibility='hidden';
    pnl.style.overflow='hidden';
}

function ShowInstructorBio_Search(name, bio, position) {
    if (document.OpenBio != null) { 
        HideInstructorBio(document.OpenBio); 
    }
    document.OpenBio = name;
    var pnl = document.getElementById(name);
	pnl.style.visibility='visible';
    pnl.style.top=position + 'px';
    pnl.style.overflow='auto';
    
    var contents
    contents="<DIV style=\"MARGIN: 0px 5px 5px 0px; TEXT-ALIGN: right\"><A href=\"javascript:HideInstructorBio('" + name + "');\"><STRONG>Close</STRONG></A></DIV>"
    contents=contents+bio
    pnl.innerHTML=contents
}
                                  

//Clears the userdata so that the side nav will lose its persistence
function HandleDeleteClientPersistence() {
var userDataElem = document.all('Nav_Layout');
   userDataElem.addBehavior("#default#userData");
   userDataElem.removeAttribute('LayoutAttr');
   userDataElem.save('Nav');
   
}

function CheckForCompatableBrowser() {
   //this is designed to run only at the first load which is exactly when we want to check the browser version:
   BrowserDetect.init();
   if ((BrowserDetect.browser != "Explorer") && (BrowserDetect.browser !="Firefox")) {
    alert("In order to provide a feature-rich and user-friendly experience on this website, it is designed to run on Microsoft Internet Explorer or Firefox browsers.  We have detected that you are using a different brower and recommend that you re-open this site in Explorer or Firefox to ensure the best experience.");
   }
}

/////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////
// Ultimate Editor Styles functions
/////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////

function ChangeStyle(ID) {
    var ueObj = UltimateEditors[ID];
    var range = ueObj.GetCurrentRange();
    var selectedStyle = document.getElementById(ID+'ddStyles').value;
    var MyText = range.htmlText
    MyText = MyText.replace(/<span[^<>]+>/gi,"");
    MyText = MyText.replace(/<\/span>/gi,"");
    MyText = MyText.replace(/<font[^<>]+>/gi,"");
    MyText = MyText.replace(/<\/font>/gi,"");
    range.pasteHTML('<span class="' + selectedStyle + '">' + MyText + '</span>');
}
function ShowHideStylePanel(hdnShowStylePanel_ID, index) {
    var IsShowStyles = document.getElementById(hdnShowStylePanel_ID);
    if (IsShowStyles.value=="true") {
        ShowStylePanel('ViewStyles' + index);
	} else {
        HideStylePanel('ViewStyles' + index);
	}
}
function ShowStylePanel(name) {
        document.getElementById(name).style.visibility='visible';
}
function HideStylePanel(name) {
        document.getElementById(name).style.visibility='hidden';
}

//this works to show the syles in the drop down box, except that you can't control a dd box via javascript
//may come in handy for future implementations
function SetStyleBox() {
    var Styles = document.getElementById('ctl00_ContentPlaceHolder1_UltimateEditor1ddStyles').options;
    var i;
    for (i=0;i<Styles.length;i++) {
        Styles[i].style.className=Styles[i].value;
        document.getElementById('ctl00_ContentPlaceHolder2_txtTitle').className = Styles[i].value;
    }
    
}


/////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////
// Browser Detection functions
/////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////
var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};