// these variables are for browser compatibility
var ns = (document.layers ? true : false);
var ie = (document.all ? true : false);
var w3c = (document.getElementById ? true : false);

var hidden = (ns ? 'hide' : 'hidden');
var visible = (ns ? 'show' : 'visible');
// end b comp vars

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) { //v4.0
  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 && document.getElementById) x=document.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 MM_showHideLayers() { //v3.0
  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; }
}

///////////////////////////////////////////////////////////////////

function WM_netscapeCssFix() {
  /*
    Source: Webmonkey Code Library
    (http://www.hotwired.com/webmonkey/javascript/code_library/)

    Author: Taylor
    Author Email: taylor@wired.com
    Author URL: http://www.taylor.org/
    */

  // This part was inspired by Matthew_Baird@wayfarer.com
  // It gets around another unfortunate bug whereby Netscape 
  // fires a resize event when the scrollbars pop up. This 
  // checks to make sure that the window's available size 
  // has actually changed.
  if (document.WM.WM_netscapeCssFix.initWindowWidth != window.innerWidth || document.WM.WM_netscapeCssFix.initWindowHeight != window.innerHeight) {
    document.location = document.location;
  }
}

function WM_netscapeCssFixCheckIn() {
  // This function checks to make sure the version of Netscape 
  // in use contains the bug; if so, it records the window's 
  // width and height and sets all resize events to be handled 
  // by the WM_netscapeCssFix() function.
  if ((navigator.appName == 'Netscape') && (parseInt(navigator.appVersion) == 4)) {
    if (typeof document.WM == 'undefined'){
      document.WM = new Object;
    }
    if (typeof document.WM.WM_scaleFont == 'undefined') {
      document.WM.WM_netscapeCssFix = new Object;
      document.WM.WM_netscapeCssFix.initWindowWidth = window.innerWidth;
      document.WM.WM_netscapeCssFix.initWindowHeight = window.innerHeight;
    }
    window.onresize = WM_netscapeCssFix;
  }
}

WM_netscapeCssFixCheckIn()

///////////////////////////////////////////////////////////////////

/*********************************
this js is for the topnav to hide and show its 
subnavigation
*********************************/
function showLayer(idName){
	if (ns){
		subMenu = document.layers[idName];
	}
	else if (ie){
		subMenu = document.all[idName].style;
	}
	else if (w3c){
		subMenu = document.getElementById(idName).style;
	}
	if (subMenu.visibility == hidden){
		subMenu.visibility = visible;
	}
}

function hideLayer(idName){
	if (ns){
		subMenu = document.layers[idName];
	}
	else if (ie){
		subMenu = document.all[idName].style;
	}
	else if (w3c){
		subMenu = document.getElementById(idName).style;
	}
	if (subMenu.visibility == visible){
		subMenu.visibility = hidden;
	}
}
/****************************************
end hide and show functions
****************************************/

/***************************************
this is a function to dynamically generate
divs or layers depending on the browser
***************************************/
function genLayer(layerid, layerzIdx, layerTop, layerLeft, layerWdth, layerHgt, layerVis, layerCopy){
	if (ns){
		document.write('<layer name='+layerid+' z-Index='+layerzIdx+' top='+layerTop+' left='+layerLeft+' width='+layerWdth+' height='+layerHgt+' visibility='+layerVis+'>'+layerCopy+'</layer>');
	}
	else if (ie || w3c) {
		document.write('<div id="'+layerid+'" style="position: absolute; z-Index:'+layerzIdx+'px; top:'+layerTop+'px; left:'+layerLeft+'px; width:'+layerWdth+'px; height:'+layerHgt+'px; visibility:'+layerVis+';">'+layerCopy+'</div>');
	}
}