<!--
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];}
}
//-->




// Comma separated list of images to rotate
var imgs = new Array('images/heading-topsoil1.jpg', 'images/skidsteer-soil.jpg', 'images/heading-trees.jpg', 'images/heading-spiderlily.jpg', 'images/skidsteer.jpg', 'images/heading-conifers2.jpg', 'images/heading-truck.jpg', 'images/heading-shrub.jpg');
// delay in milliseconds between image swaps 1000 = 1 second
var delay = 4000;
var counter = 0;

function preloadImgs(){
  for(var i=0;i<imgs.length;i++){
    MM_preloadImages(imgs[i]);
  }
}

function randomImages(){
  if(counter == (imgs.length)){
    counter = 0;
  }
  MM_swapImage('rotator', '', imgs[counter++]);
  setTimeout('randomImages()', delay);
}

<!--
function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);
//-->

<!--
// -----------------------------------------------------------------------------
// Globals
// Major version of Flash required
var requiredMajorVersion = 6;
// Minor version of Flash required
var requiredMinorVersion = 0;
// Revision of Flash required
var requiredRevision = 0;
// the version of javascript supported
var jsVersion = 1.0;
// -----------------------------------------------------------------------------
// -->

<!-- // Detect Client Browser type
var isIE  = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
var isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;
jsVersion = 1.1;
// JavaScript helper required to detect Flash Player PlugIn version information
function JSGetSwfVer(i){
	// NS/Opera version >= 3 check for Flash plugin in plugin array
	if (navigator.plugins != null && navigator.plugins.length > 0) {
		if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
			var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
      		var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description;
			descArray = flashDescription.split(" ");
			tempArrayMajor = descArray[2].split(".");
			versionMajor = tempArrayMajor[0];
			versionMinor = tempArrayMajor[1];
			if ( descArray[3] != "" ) {
				tempArrayMinor = descArray[3].split("r");
			} else {
				tempArrayMinor = descArray[4].split("r");
			}
      		versionRevision = tempArrayMinor[1] > 0 ? tempArrayMinor[1] : 0;
            flashVer = versionMajor + "." + versionMinor + "." + versionRevision;
      	} else {
			flashVer = -1;
		}
	}
	// MSN/WebTV 2.6 supports Flash 4
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.6") != -1) flashVer = 4;
	// WebTV 2.5 supports Flash 3
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.5") != -1) flashVer = 3;
	// older WebTV supports Flash 2
	else if (navigator.userAgent.toLowerCase().indexOf("webtv") != -1) flashVer = 2;
	// Can't detect in all other cases
	else {
		
		flashVer = -1;
	}
	return flashVer;
} 
// If called with no parameters this function returns a floating point value 
// which should be the version of the Flash Player or 0.0 
// ex: Flash Player 7r14 returns 7.14
// If called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision) 
{
 	reqVer = parseFloat(reqMajorVer + "." + reqRevision);
   	// loop backwards through the versions until we find the newest version	
	for (i=25;i>0;i--) {	
		if (isIE && isWin && !isOpera) {
			versionStr = VBGetSwfVer(i);
		} else {
			versionStr = JSGetSwfVer(i);		
		}
		if (versionStr == -1 ) { 
			return false;
		} else if (versionStr != 0) {
			if(isIE && isWin && !isOpera) {
				tempArray         = versionStr.split(" ");
				tempString        = tempArray[1];
				versionArray      = tempString .split(",");				
			} else {
				versionArray      = versionStr.split(".");
			}
			versionMajor      = versionArray[0];
			versionMinor      = versionArray[1];
			versionRevision   = versionArray[2];
			
			versionString     = versionMajor + "." + versionRevision;   // 7.0r24 == 7.24
			versionNum        = parseFloat(versionString);
        	// is the major.revision >= requested major.revision AND the minor version >= requested minor
			if ( (versionMajor > reqMajorVer) && (versionNum >= reqVer) ) {
				return true;
			} else {
				return ((versionNum >= reqVer && versionMinor >= reqMinorVer) ? true : false );	
			}
		}
	}	
	return (reqVer ? false : 0.0);
}

 function highlight(cur,which){
	strength=(which==0)? 1 : 0.3
	if (cur.style.MozOpacity)
		cur.style.MozOpacity=strength
	else if (cur.filters)
		cur.filters.alpha.opacity=strength*200
 }

function popupWindow(url) {
  window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width=650,height=500,screenX=150,screenY=150,top=150,left=150')
}
// -->



function calcConc(form) {
    var concAmt = 0;
    for (var i = 1; i <= 3; i++) {

       var parsecheck = "" + parseFloat(form.elements[i].value);
       if (parseFloat(form.elements[i].value) < 0 ||
           parseFloat(form.elements[i].value) == 0 ||
           parsecheck == "NaN") {
          window.alert("Please enter a positive number in each of the " +
                       "three input fields.");
          return false;
       }
    }
    if (form.elements[5].checked == true)
       concAmt = form.elements[1].value * form.elements[2].value *
                 (form.elements[3].value / 12.0) / 27;
    else
       concAmt = form.elements[1].value * form.elements[2].value *
                 form.elements[3].value / 27;
    form.elements[7].value = formatvalue(concAmt,7);
    return true;
}
function calcCol(form) {
    var concAmt = 0;
    for (var i = 1; i <= 2; i++) {
       var parsecheck = "" + parseFloat(form.elements[i].value);
       if (parseFloat(form.elements[i].value) < 0 ||
           parseFloat(form.elements[i].value) == 0 ||
           parsecheck == "NaN") {
          window.alert("Please enter a positive number in both of the " +
                       "two input fields.");
          return false;
       }
    }
    var radius = form.elements[2].value / 24.0;
    concAmt = form.elements[1].value * radius * radius * Math.PI / 27;
    form.elements[4].value = formatvalue(concAmt,7);
    return true;
}
function calcWall(form)  {
    var concAmt = 0;
    for (var i = 1; i <= 2; i++) {
       var parsecheck = "" + parseFloat(form.elements[i].value);
       if (parseFloat(form.elements[i].value) < 0 ||
           parseFloat(form.elements[i].value) == 0 ||
           parsecheck == "NaN") {
          window.alert("Please enter a positive number in both of the " +
                       "two input fields.");
          return false;
       }
    }
    if (form.elements[3].checked == true)
       concAmt = form.elements[1].value * form.elements[2].value * 0.32 / 27.0;
    else
       concAmt = form.elements[1].value * form.elements[2].value * 0.51 / 27.0;
    form.elements[6].value = formatvalue(concAmt,7);
    return true;
}
function formatvalue(input, rsize) {
   var invalid = "**************************";
   var nines = "999999999999999999999999";
   var strin = "" + input;
   var fltin = parseFloat(strin);
   if (strin.indexOf("e") != -1 ||
       fltin > parseFloat(nines.substring(0,rsize)+".4"))
      return invalid.substring(0, rsize);
   if (strin.length <= rsize) return strin;
   var rounded = "" + (fltin +
      (fltin - parseFloat(strin.substring(0, rsize))));
   return rounded.substring(0, rsize);
}
function clearform(form,count,lastElement) {
    for (var i = 1; i <= count; i++) form.elements[i].value = "";
    form.elements[lastElement].value = "";
}
// -->


function doRect()
{
      with(document.rect)
      {
            theWidth.value = (theWidth.value == '')?0:theWidth.value*1.0;
            theLength.value = (theLength.value == '')?0:theLength.value*1.0;
            theDepth.value = (theDepth.value == '')?0:theDepth.value*1.0;
            theArea.value = (theWidth.value *  theLength.value).toFixed(2);
            theVolume.value = ((theWidth.value *  theLength.value * (theDepth.value/12))/27).toFixed(2);
      }
}
function doCircle()
{
      with(document.circle)
      {
            theRadius.value = (theRadius.value == '')?0:theRadius.value*1.0;
            theDepth.value = (theDepth.value == '')?0:theDepth.value*1.0;
            theArea.value = (theRadius.value *  theRadius.value * Math.PI).toFixed(2);
            theVolume.value = ((theRadius.value * theRadius.value * (theDepth.value/12) * Math.PI) / 27).toFixed(2);     

	  }
}

function doTriangle()
{
      with(document.tri)
      {
            theBase.value = (theBase.value == '')?0:theBase.value*1.0;
            theHeight.value = (theHeight.value == '')?0:theHeight.value*1.0;
            theDepth.value = (theDepth.value == '')?0:theDepth.value*1.0;
            theArea.value = (theBase.value *  theHeight.value / 2).toFixed(2);
            theVolume.value = (((theBase.value * theHeight.value / 2) * (theDepth.value/12) )/27).toFixed(2);     

	  }
}