var mnuSelected = '';  //selected menu

var slideShowSpeed = 5.0; //time in seconds
var crossFadeDuration = 30;
var image_index = 0;
var img_alt;
var random_display = 1; //0=no, 1=yes
slideShowSpeed *= 1000;

image_list = new Array();

image_list[image_index++] = "images/Yellow.jpg";
image_list[image_index++] = "images/Forroger.jpg";
image_list[image_index++] = "images/Green-Flight-Deck.jpg";
image_list[image_index++] = "images/New-Mexico-Air-Boat.jpg";
image_list[image_index++] = "images/Mark-in-Pit-2.jpg";
image_list[image_index++] = "images/rb1.jpg";
image_list[image_index++] = "images/Fireman_pointing_hr.jpg";
image_list[image_index++] = "images/baggagetug.jpg";
image_list[image_index++] = "images/041123-F-0000W-005.jpg";
image_list[image_index++] = "images/wilcrane.jpg";
image_list[image_index++] = "images/Webster-Boat-1.jpg";
image_list[image_index++] = "images/Vultures-Row.jpg";
image_list[image_index++] = "images/Sgt-baird.jpg";
image_list[image_index++] = "images/Rotil.jpg";
image_list[image_index++] = "images/PAGE13G.jpg"
image_list[image_index++] = "images/O22.jpg";
image_list[image_index++] = "images/mvc-022x.jpg";
image_list[image_index++] = "images/mike.jpg";
image_list[image_index++] = "images/Hard-Hat(Small)-copy.jpg";
image_list[image_index++] = "images/Ground-Support-Headset.jpg";
image_list[image_index++] = "images/Everett-fire-dept-2.jpg";
image_list[image_index++] = "images/davidclark1.jpg";
image_list[image_index++] = "images/Aviation.jpg";
image_list[image_index++] = "images/011101airbridge-h.jpg";
image_list[image_index++] = "images/0095-Customs-2.jpg";
image_list[image_index++] = "images/PAGE2A.jpg";
image_list[image_index++] = "images/DSC_3479sm.jpg";
image_list[image_index++] = "images/Cropped-SCHIPOL-323_RT8-BW.gif";
image_list[image_index++] = "images/IMGP1298.gif";
image_list[image_index++] = "images/IMGP1294.gif";
image_list[image_index++] = "images/IMGP1299.gif";
image_list[image_index++] = "images/IMGP1295.gif";


/*
image_list[image_index++] = new imageItem("images/Yellow.jpg","");
image_list[image_index++] = new imageItem("images/Forroger.jpg","");
image_list[image_index++] = new imageItem("images/AVMsg.gif","http://www.airventure.org/");
image_list[image_index++] = new imageItem("images/Green-Flight-Deck.jpg","");
image_list[image_index++] = new imageItem("images/FHEMsg.gif","http://www.firehouseexpo.com/fhe/index.po");
image_list[image_index++] = new imageItem("images/New-Mexico-Air-Boat.jpg","");
image_list[image_index++] = new imageItem("images/Mark-in-Pit-2.jpg","");
image_list[image_index++] = new imageItem("images/rb1.jpg","");
image_list[image_index++] = new imageItem("images/Fireman_pointing_hr.jpg","");
image_list[image_index++] = new imageItem("images/baggagetug.jpg","");
image_list[image_index++] = new imageItem("images/041123-F-0000W-005.jpg","");
image_list[image_index++] = new imageItem("images/wilcrane.jpg","");
image_list[image_index++] = new imageItem("images/Webster-Boat-1.jpg","");
image_list[image_index++] = new imageItem("images/Vultures-Row.jpg","");
image_list[image_index++] = new imageItem("images/Sgt-baird.jpg","");
image_list[image_index++] = new imageItem("images/Rotil.jpg","");
image_list[image_index++] = new imageItem("images/PAGE13G.jpg","");
image_list[image_index++] = new imageItem("images/O22.jpg","");
image_list[image_index++] = new imageItem("images/mvc-022x.jpg","");
image_list[image_index++] = new imageItem("images/mike.jpg","");

image_list[image_index++] = new imageItem("images/Hard-Hat(Small)-copy.jpg","");
image_list[image_index++] = new imageItem("images/Ground-Support-Headset.jpg","");
image_list[image_index++] = new imageItem("images/Everett-fire-dept-2.jpg","");
image_list[image_index++] = new imageItem("images/davidclark1.jpg","");
image_list[image_index++] = new imageItem("images/Aviation.jpg","");
image_list[image_index++] = new imageItem("images/011101airbridge-h.jpg","");
image_list[image_index++] = new imageItem("images/0095-Customs-2.jpg","");
image_list[image_index++] = new imageItem("images/PAGE2A.jpg","");
image_list[image_index++] = new imageItem("images/DSC_3479sm.jpg","");

*/


var isIE = (document.all && navigator.userAgent.indexOf("Opera")== -1);
/*
function imageItem(image_location,img_alt_text) 
{
	this.image_item = new Image();
	this.image_item.src = image_location;
	this.image_item.alt = img_alt_text;
}
*/

function land(ref, target)
{
	if (target=="_self") {window.location=loc;}
	else {if (target=="_top") {top.location=loc;}
	else {if (target=="_blank") {window.open(loc);}
	else {if (target=="_parent") {parent.location=loc;}
	else {parent.frames[target].location=loc;};
	}}}
}

function get_ImageItemLocation(imageObj) 
{
	return(imageObj.image_item)
}

function get_ImageItemAlt(imageObj) 
{
	return(imageObj.image_item.alt)
}

function generate(x,y)
{
	var range = y-x+1;
	return Math.floor(Math.random() * range)+ x;
}

function getNextImage(image_list) 
{
	image_index = (random_display) ? generate(0, image_list.length-1) : (image_index+1) % image_list.length;
	var new_image = image_list[image_index];//get_ImageItemLocation(image_list[image_index]);
	//img_alt = get_ImageItemAlt(image_list[image_index]);
	return(new_image);
}

function runSlideShow() 
{
	var aImgName;
	if (isIE) 
	{
		//document.images.RSlideShow.style.filter="blendTrans(duration=2)";
		//document.images.RSlideShow.style.filter="blendTrans(duration=crossFadeDuration)";
		//document.images.RSlideShow.filters.blendTrans.Apply();
		aImgName = 9;
	}
	else
		aImgName = "aImage";
	
	document.images.RSlideShow.src = getNextImage(image_list);
	//document.anchors[aImgName].href = img_alt;
	
	/*
	if (isIE) 
	{
		document.images.RSlideShow.filters.blendTrans.Play();
	}
	
	setTimeout('runSlideShow()', slideShowSpeed);
	*/
	
	document.getElementById('mnuAvHeadsets').style.left = 
		document.getElementById('AvHeadsets').childNodes[1].offsetWidth + document.getElementById('AvHeadsets').offsetLeft;
	document.getElementById('mnuAvHeadsets').style.top = 
		document.getElementById('AvHeadsets').offsetTop;
}
			
function imgON(objImg)
{
	objImg.src="images/on.gif";
}

function imgOFF(objImg)
{
	objImg.src = "images/off.gif";
}

function jump(menu)
{
	ref=menu.choice.options[menu.choice.selectedIndex].value;
	splitc=ref.lastIndexOf("&");
	target="";
	if (splitc!=-1)
		{loc=ref.substring(0,splitc);
		target=ref.substring(splitc+1,1000).toLowerCase();}
	else {loc=ref; target="_self";};
	if (ref != "") {land(loc,target);}
}

//Dynamically updates Copyright Date to current year.
COPYRIGHT = "Copyright © David Clark Company Incorporated ";
function writeCopyright()
{ 
	document.write(COPYRIGHT, new Date().getFullYear(), ". All rights reserved.");
}

function writeLastReview()
{
	var modDate = new Date(document.lastModified);
	var modYear = modDate.getYear();
	if (modYear<1000) modYear+=1900;

	document.write("<b>This page was last reviewed: " + (modDate.getMonth()+1) + "/" +
					modDate.getDate() + "/" +(modYear+"").substring(2,4) + ".</b>");
}

function showMenu(menu)
{
	hideMenu(mnuSelected);
	document.getElementById(menu).style.visibility = 'visible';
	mnuSelected = menu;			
}

function hideMenu(menu)
{
	if(mnuSelected!='')
	{
		document.getElementById(menu).style.visibility = 'hidden';
	}
}