//
// Preload the images for smoother mouseOver operation

var imgLink01Off  = new Image(); imgLink01Off.src  = "images/link_off_AdvisoryBoard.gif";
var imgLink01On   = new Image(); imgLink01On.src   = "images/link_on_AdvisoryBoard.gif";
var imgLink01Roll = new Image(); imgLink01Roll.src = "images/link_roll_AdvisoryBoard.gif";

var imgLink02Off  = new Image(); imgLink02Off.src  = "images/link_off_RnD.gif";
var imgLink02On   = new Image(); imgLink02On.src   = "images/link_on_RnD.gif";
var imgLink02Roll = new Image(); imgLink02Roll.src = "images/link_roll_RnD.gif";

var imgLink03Off  = new Image(); imgLink03Off.src  = "images/link_off_Test.gif";
var imgLink03On   = new Image(); imgLink03On.src   = "images/link_on_Test.gif";
var imgLink03Roll = new Image(); imgLink03Roll.src = "images/link_roll_Test.gif";

var imgLink04Off  = new Image(); imgLink04Off.src  = "images/link_off_Versions.gif";
var imgLink04On   = new Image(); imgLink04On.src   = "images/link_on_Versions.gif";
var imgLink04Roll = new Image(); imgLink04Roll.src = "images/link_roll_Versions.gif";

var imgLink05Off  = new Image(); imgLink05Off.src  = "images/link_off_Mgmt.gif";
var imgLink05On   = new Image(); imgLink05On.src   = "images/link_on_Mgmt.gif";
var imgLink05Roll = new Image(); imgLink05Roll.src = "images/link_roll_Mgmt.gif";

var imgLink06Off  = new Image(); imgLink06Off.src  = "images/link_off_News.gif";
var imgLink06On   = new Image(); imgLink06On.src   = "images/link_on_News.gif";
var imgLink06Roll = new Image(); imgLink06Roll.src = "images/link_roll_News.gif";

var imgLink07Off  = new Image(); imgLink07Off.src  = "images/link_off_Contact.gif";
var imgLink07On   = new Image(); imgLink07On.src   = "images/link_on_Contact.gif";
var imgLink07Roll = new Image(); imgLink07Roll.src = "images/link_roll_Contact.gif";

//-----------------------------------------------------------------------------
// inputs
//  - linkImgElmt : the link Img Object
//  - imgIndex : an int indicating which img was clicked
//
// Swaps the Nav Link Img depending on the Nav Link the user has moused over.
//-----------------------------------------------------------------------------
function swapImg( linkImgElmt, imgIndex )
{
	// If the link is 'on', meaning the link's associated page is currently being displayed, do nothing.
	if ( linkImgElmt.src.indexOf("_on_") == -1 )
	{
		if ( imgIndex == 1 )
		{
			if ( linkImgElmt.src.indexOf("_off_") == -1 ) {
				linkImgElmt.src = imgLink01Off.src;
			} else {
				linkImgElmt.src = imgLink01Roll.src
			}
		}
		else if ( imgIndex == 2 )
		{
			if ( linkImgElmt.src.indexOf("_off_") == -1 ) {
				linkImgElmt.src = imgLink02Off.src;
			} else {
				linkImgElmt.src = imgLink02Roll.src
			}
		}
		else if ( imgIndex == 3 )
		{
			if ( linkImgElmt.src.indexOf("_off_") == -1 ) {
				linkImgElmt.src = imgLink03Off.src;
			} else {
				linkImgElmt.src = imgLink03Roll.src
			}
		}
		else if ( imgIndex == 4 )
		{
			if ( linkImgElmt.src.indexOf("_off_") == -1 ) {
				linkImgElmt.src = imgLink04Off.src;
			} else {
				linkImgElmt.src = imgLink04Roll.src
			}
		}
		else if ( imgIndex == 5 )
		{
			if ( linkImgElmt.src.indexOf("_off_") == -1 ) {
				linkImgElmt.src = imgLink05Off.src;
			} else {
				linkImgElmt.src = imgLink05Roll.src
			}
		}
		else if ( imgIndex == 6 )
		{
			if ( linkImgElmt.src.indexOf("_off_") == -1 ) {
				linkImgElmt.src = imgLink06Off.src;
			} else {
				linkImgElmt.src = imgLink06Roll.src
			}
		}
		else if ( imgIndex == 7 )
		{
			if ( linkImgElmt.src.indexOf("_off_") == -1 ) {
				linkImgElmt.src = imgLink07Off.src;
			} else {
				linkImgElmt.src = imgLink07Roll.src
			}
		}
	}
}