/* browser check for either IE or Netscape 4+*/
<!--//
	if(parseInt(navigator.appVersion) >= 4) 
		{
			if(navigator.platform.slice(0,3) == 'Win')
				{
					isPC = true;
					if(navigator.appName == "Netscape") 
						{
							isNav = true;
						}
					else 
						{
							isIE = true;
						}
				}
			else if(navigator.platform.slice(0,3) == 'Mac')
				{
					isMac = true;
					if(navigator.appName == "Netscape") 
						{
							isNav = true;
						}
					else 
						{
							isIE = true;
						}
				}
		}
	else 
		{
			alert('Welcome. This site requires a version 4 browser or above to function correctly. You can download the latest version of Microsoft Internet Explorer from http://www.microsoft.com/or Netscape Navigator from http://www.netscape.com/');
		}
//-->
	
	/* window close */
<!--//
	function windowclose() 
		{
			window.close();
		}
//-->

	/* new window */
<!--//
	function Start(page) 
		{
			OpenWin = this.open(page, "CtrlWindow", "toolbar=yes,menubar=yes,location=yes,scrollbars=yes,resizable=yes,status=yes,width=640,height=480,screenX=0,screenY=0");
		}
//-->
	
	/* no right click */
<!--//
	function clickIE()
		{
			if (document.all) 
				{
					return false;
				}
		} 
	function clickNS(e)
		{
			if (document.layers||(document.getElementById&&!document.all)) 
				{ 
					if (e.which==2||e.which==3) 
						{
							return false;
						}
				}
		} 
	if (document.layers) 
		{
			document.captureEvents(Event.MOUSEDOWN);
			document.onmousedown=clickNS;
		} 
	else
		{
			document.onmouseup=clickNS;
			document.oncontextmenu=clickIE;
		} 
	document.oncontextmenu=new Function("return false") 
//-->
	
	/* rollover image functionality */
<!--//
	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) 
		{ //v4.0
			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];
				}
		}
//-->

	/* centered popup */
<!--//
	function NewWindow(mypage, myname, w, h, scroll) 
		{
			var winl = (screen.width - w) / 2;
			var wint = (screen.height - h) / 2;
			winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable'
			win = window.open(mypage, myname, winprops)
			if (parseInt(navigator.appVersion) >= 4) 
				{ 
					win.window.focus(); 
				}
		}
//-->

	/* bookmark */
<!--//	
	var url = "http://www.epdgroup.com/Contact_Us/Careers_and_Opportunities.asp";
	var title = "Energy Projects Development - Process Engineering and Project Management Consultants to the Oil and Gas Industry";
	function makeLink()
		{
			if(document.all)
			window.external.AddFavorite(url,title)
		}	
// -->

	/* displays a default message on the status bar */
<!--//
	window.defaultStatus="Energy Projects Development - Process Engineering and Project Management Consultants to the Oil and Gas Industry";
//-->
	
	/* frame loading */
<!--//
	function doubleLoad(filename)
		{
			location.href="#";
			eval("parent.frames['navigation'].location.href='navigation"+filename+".html'");
			eval("parent.frames['imageContent'].location.href='main"+filename+".html'");
		}
//-->
	
	/* switch menus */
<!--//
function SwitchMenu(obj){
	if(document.getElementById){
	var el = document.getElementById(obj);
	var ar = document.getElementById("content").getElementsByTagName("DIV");
		if(el.style.display == "none"){
			for (var i=0; i<ar.length; i++){
				ar[i].style.display = "none";
			}
			el.style.display = "block";
		}else{
			el.style.display = "none";
		}
	}
}
function ChangeClass(menu, newClass) { 
	 if (document.getElementById) { 
	 	document.getElementById(menu).className = newClass;
	 } 
} 
document.onselectstart = new Function("return true");
//-->

/* defines date functionality */
<!--//
		d = new Array	(
		"Sunday ",
		"Monday ",
		"Tuesday ",
		"Wednesday ",
		"Thursday ",
		"Friday ",
		"Saturday ");
		m = new Array(
		"January",
		"February",
		"March",
		"April",
		"May",
		"June",
		"July",
		"August",
		"September",
		"October",
		"November",
		"December");
		today = new Date();
		day = today.getDate();
		year = today.getYear();
	if (year < 2000)
		year = year + 1900;
		end = "th";
	if (day==1 || day==21 || day==31) end="st";
	if (day==2 || day==22) end="nd";
	if (day==3 || day==23) end="rd";
		day+=end;
//-->

	/* random image rotation */
<!-- //
	function RandomImageLong(images,iparams)
		{
			si=0; 
			ci=0;
			cc=0;
			imageSet = new Array();
			ei = images.length;
			for (i=1;i<ei;i++) 
				{
					if (images.charAt(i) == ' ' || images.charAt(i) == ',') 
						{
							imageSet[cc] = images.substring(si,i);
							cc++;
							si=i+1;
      					}
    				}
			ind = Math.floor(Math.random() *cc);
			document.write("<img "+iparams+" src="+imageSet[ind]+">");
		}

	function RandomImage(images)
		{
			RandomImageLong(images," ");
		}

	function RandomImageLinkLongTarget(images,urls,iparams,hparams)
		{
 			imageSet = new Array();
 			urlSet = new Array();
 			si=0; 
 			ci=0;
	 		cc=0;
 			ei = images.length;
  			for (i=1;i<ei;i++) 
				{
					if (images.charAt(i) == ' ' || images.charAt(i) == ',') 
						{
							imageSet[cc] = images.substring(si,i);
							cc++;
							si=i+1;
      					}
    				}
  			ind = Math.floor(Math.random() *cc);
 			si=0; 
 			ci=0;
 			cc=0;
 			ei = urls.length;
  			for (i=1;i<ei && cc <=ind ;i++) 
				{
    					if (urls.charAt(i) == ' ' || urls.charAt(i) == ',') 
						{
      						urlSet[cc] = urls.substring(si,i);
      						cc++;
							si=i+1;
      					}
    				}

			document.write("<a "+hparams+" href=\""+urlSet[ind]+"\"><img "+iparams+" src="+imageSet[ind]+"></a>");
		}

	function RandomImageLinkLong(images,urls,iparams)
		{
			RandomImageLinkLongTarget(images,urls,iparams,"");
		}

	function RandomImageLink(images,urls)
		{
			RandomImageLinkLongTarget(images,urls,"border=0","");
		}
// -->


	/* preload image */
<!-- //
	function MM_preloadImages() 
		{
			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];
						}
				}
		}
		
			MM_preloadImages(
				'images/blank.gif');
// -->

<!--//
function toggleElements(turnOn)
{
  var selectElements = document.getElementsByTagName('select');
  for (i=0; i<selectElements.length; i++) selectElements.item(i).style.visibility = (turnOn) ? "visible" : "hidden";
}
// -->