// JavaScript Document
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 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_showHideLayers() { //v6.0
	//alert("show/hide");
  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; }
}

var imgDir = "pics/";
var imgBase = "_main";
var imgName;
var layerID;

function preload_diagrams()
{
	var img1 = imgDir + pageID + imgBase + "_1.jpg";
	var img2 = imgDir + pageID + imgBase + "_2.jpg";
	var img3 = imgDir + pageID + imgBase + "_3.jpg";
	var img4 = imgDir + pageID + imgBase + "_4.jpg";
	MM_preloadImages(img1,img2,img3,img4);
}

function preload_insets()
{
	if (pageID == "somerset") {
		//alert("somerset");
		MM_preloadImages("isnt_somerset_dia1_1.gif","isnt_somerset_dia1_2.gif","isnt_somerset_dia1_3.gif");
		MM_preloadImages("isnt_somerset_inset_2.gif","isnt_somerset_inset_1.gif","isnt_somerset_inset_3.gif");
	}
	if (pageID == "greenway") {
		//alert("greenway");
		MM_preloadImages("isnt_greenway_dia1_1.gif","isnt_greenway_dia1_2.gif","isnt_greenway_dia1_3.gif");
		MM_preloadImages("isnt_greenway_dia2_1.gif","isnt_greenway_dia2_2.gif","isnt_greenway_dia2_3.gif");
		MM_preloadImages("isnt_greenway_dia3_1.gif");
		MM_preloadImages("isnt_greenway_inset1_1.gif","isnt_greenway_inset1_2.gif","isnt_greenway_inset1_3.gif");
		MM_preloadImages("isnt_greenway_inset2_1.gif","isnt_greenway_inset2_2.gif","isnt_greenway_inset2_3.gif");
		MM_preloadImages("isnt_greenway_inset3_1.gif");
	}
} /* end preload_insets() */

function trellisMapOver(itemID)
{
	//alert("trellisMapOver(" +itemID+")");
	if (layerID) MM_showHideLayers(layerID,'','hide');
	imgName = imgDir + pageID + imgBase + "_" + itemID + ".jpg";
	//alert(imgName);
	layerID = "div" + itemID;
	MM_swapImage(imgID,'',imgName,1);
	//MM_showHideLayers('divIntro','','hide');
	MM_showHideLayers(layerID,'','show');
}

function gatewayImgOut()
{
	MM_swapImgRestore();
	MM_showHideLayers(layerID,'','hide');
//	MM_showHideLayers('divIntro','','show');
}