var activeTab = "Tab1";
var activeContent = "Tab1Content";
function toggleTab(id,contentid)
{
	document.getElementById(activeTab).style.backgroundColor = "#777777";
	document.getElementById(activeContent).style.display = "none";
	document.getElementById(id).style.backgroundColor = "#333333";
	document.getElementById(contentid).style.display = "block";
	activeTab = id;
	activeContent = contentid;
}

function navSwap(pic) {
	var path = pic.src;
	var imgStr = path.substring(0, path.indexOf(".jpg"))
	var hover = imgStr + "-over.jpg";
	pic.src = hover;

	pic.onmouseout = function() {
		path = pic.src;
		imgStr = path.substring(0, path.indexOf("-over.jpg"))
		hover = imgStr + ".jpg";
		pic.src = hover;
	}

}

var DivNum = 1;
var numOfDivs;

function ShowDiv(num) {

	DivNum = num;
	//alert("Number of Divs: " + numOfDivs + "\nActive Div: " + num);

	for(var i = 1; i <= numOfDivs; i++) {
		GetTag('SSDiv' + i).style.display = 'none';
	}

	GetTag('SSDiv' + num).style.display = 'block';

	if(GetTag('SSDiv' + (num + 1))) {
		GetTag('btnNext').disabled = false;
	} else {
		GetTag('btnNext').disabled = true;
	}

	if(GetTag('SSDiv' + (num - 1))) {
		GetTag('btnPrev').disabled = false;
	} else {
		GetTag('btnPrev').disabled = true;
	}

}

function DetectDivs() {
	var d = 1;
	while( GetTag('SSDiv' + d) ) {
		numOfDivs = d;
		d++;
	}

	ShowDiv(DivNum);
}



function imgSwap(pic)
{
	var path = pic.src;
	var overState = "_hot";
	var imgStr, hover, type;
	
	if(path.indexOf(".gif") != -1) {
		type = ".gif";
		imgStr = path.substring(0, path.indexOf(type))
		hover = imgStr + overState + type;
	} else if(path.indexOf(".jpg") != -1) {
		type = ".jpg";
		imgStr = path.substring(0, path.indexOf(type))
		hover = imgStr + overState + type;
	} else {
		alert("Unsupported Image Format.");
		type = hover = null;
		pic.onmouseover = null;
		return;
	}
	
	pic.src = hover;
	
	pic.onmouseout = function() {
		path = this.src;
		imgStr = path.substring(0, path.indexOf(overState + type))
		hover = imgStr + type;
		this.src = hover;
		this.onmouseout = null;
	}

}


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];}
}


function GoToMap(id)
{
    try{
        var cat = eval("Des"+id);
        window.location.href = cat.getURL();
    }catch(e) {}
}

function opacity(id, opacStart, opacEnd, millisec) {
    //speed for each frame
    var speed = Math.round(millisec / 100);
    var timer = 0;

    //determine the direction for the blending, if start and end are the same nothing happens
    if(opacStart > opacEnd) {
        for(i = opacStart; i >= opacEnd; i--) {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    } else if(opacStart < opacEnd) {
        for(i = opacStart; i <= opacEnd; i++)
            {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    }
}

//change the opacity for different browsers
function changeOpac(opacity, id) {
    var object = document.getElementById(id).style;
    object.opacity = (opacity / 100);
    object.MozOpacity = (opacity / 100);
    object.KhtmlOpacity = (opacity / 100);
    object.filter = "alpha(opacity=" + opacity + ")";
}