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 hideShowDetails(detailID, image, linkObj) {
	if (document.getElementById(detailID).style.visibility != "visible") {
		document.getElementById(detailID).style.position = "static";
		document.getElementById(detailID).style.visibility = "visible";
		tmpImg = document.getElementById(image);
		tmpImg.setAttribute("src", "images/img/minus.gif");
		tmpImg.setAttribute("alt", "Hide Details");
		linkObj.className = "detail_title_over";
	} else {
		document.getElementById(detailID).style.visibility = "hidden";
		document.getElementById(detailID).style.position = "absolute";
		tmpImg = document.getElementById(image);
		tmpImg.setAttribute("src", "images/img/plus.gif");
		tmpImg.setAttribute("alt", "Show Details");
		linkObj.className = "detail_title";
	}
}

function hoverOverSwap(imgObj) {
	tmpImg = document.getElementById(imgObj);
	tmpSrc = tmpImg.src;
	if (tmpSrc.indexOf("_over.gif") == -1) {
		tmpSrc = tmpSrc.replace(/.gif/gi, "_over.gif");	
	}
	tmpImg.setAttribute("src", tmpSrc);
}

function hoverOutSwap(imgObj) {
	tmpImg = document.getElementById(imgObj);
	tmpSrc = tmpImg.src;
	if (tmpSrc.indexOf("_over.gif") != -1) {
		tmpSrc = tmpSrc.replace(/_over.gif/gi, ".gif");
	}
	tmpImg.setAttribute("src", tmpSrc);
}

//var rightNavSelect = "newsearch";
var rightNavSelect ="legend";
function rightNavSwap(imgObj) {
	if (rightNavSelect != imgObj) {
		tmpImg = document.getElementById(imgObj);
		tmpSrc = tmpImg.src;
		if (tmpSrc.indexOf("_over.gif") == -1) {
			tmpSrc = tmpSrc.replace(/.gif/gi, "_over.gif");	
		} else {
			tmpSrc = tmpSrc.replace(/_over.gif/gi, ".gif");	
		}
		tmpImg.setAttribute("src", tmpSrc);
	}
}

var rightNavSelect1 = "newsearch";
//var rightNavSelect ="legend";
function rightNavSwap1(imgObj) {
	if (rightNavSelect1 != imgObj) {
		tmpImg = document.getElementById(imgObj);
		tmpSrc = tmpImg.src;
		if (tmpSrc.indexOf("_over.gif") == -1) {
			tmpSrc = tmpSrc.replace(/.gif/gi, "_over.gif");	
		} else {
			tmpSrc = tmpSrc.replace(/_over.gif/gi, ".gif");	
		}
		tmpImg.setAttribute("src", tmpSrc);
	}
}

function rightNavToggle1(onImg, offImg) {
	if (onImg != rightNavSelect1) {
		rightNavSelect1 = onImg;
		rightNavSwap1(offImg);
	
		document.getElementById(offImg + "box").style.position = "absolute";
		document.getElementById(offImg + "box").style.visibility = "hidden";
		
		document.getElementById(onImg + "box").style.position = "static";
		document.getElementById(onImg + "box").style.visibility = "visible";
	}
}


function rightNavToggle(onImg, offImg) {
	if (onImg != rightNavSelect) {
		rightNavSelect = onImg;
		rightNavSwap(offImg);
	
		document.getElementById(offImg + "box").style.position = "absolute";
		document.getElementById(offImg + "box").style.visibility = "hidden";
		
		document.getElementById(onImg + "box").style.position = "static";
		document.getElementById(onImg + "box").style.visibility = "visible";
	}
}

function rightNavMapDefault(onImg, offImg) {
   alert("set nav");
	if (onImg != rightNavSelect) {
		rightNavSelect = onImg;
		rightNavSwap(offImg);
	
		document.getElementById(offImg + "box").style.position = "absolute";
		document.getElementById(offImg + "box").style.visibility = "hidden";
		
		document.getElementById(onImg + "box").style.position = "static";
		document.getElementById(onImg + "box").style.visibility = "visible";
	}
}

//var zoomSelect = 3;

function zoomToggle(num) {

	document.getElementById("zoom1").src = "images/img/gis_nav_stat.gif";
	document.getElementById("zoom2").src = "images/img/gis_nav_stat.gif";
	document.getElementById("zoom3").src = "images/img/gis_nav_stat.gif";
	document.getElementById("zoom4").src = "images/img/gis_nav_stat.gif";
	document.getElementById("zoom5").src = "images/img/gis_nav_stat.gif";
	
	document.getElementById("zoom" + num).src = "images/img/gis_nav_stat_active.gif";
	zoomSelect = num;
}

function zoomMinus() {
	if (zoomSelect > 1) {
		zoomSelect--;
	}
	zoomToggle(zoomSelect);
}

function zoomPlus() {
	if (zoomSelect < 5) {
		zoomSelect++;	
	}
	zoomToggle(zoomSelect);
}