/*

	Handles functionality for rotating (upon refresh) banner images for
	home page and interior pages
	
	Author:			Jay Dobson
	Date:			Feb 8, 2008

*/

// Returns a random homepage image (string)
function GetRandomHomePageBannerImage() {

	var arrImages = new Array();
	
	arrImages[0] = '/images/banners/homepage/banner_homepage_v01.jpg';
	arrImages[1] = '/images/banners/homepage/banner_homepage_v02.jpg';
	arrImages[2] = '/images/banners/homepage/banner_homepage_v03.jpg';
	arrImages[3] = '/images/banners/homepage/banner_homepage_v04.jpg';
	arrImages[4] = '/images/banners/homepage/banner_homepage_v05.jpg';	
	
	document.getElementById('imgHomeBanner').src = arrImages[GetRandomNumber(arrImages.length)];

}

// Returns a random interior banner image (string)
function GetRandomInteriorBannerImage() {

	// Variables
	var url = document.location.href;
	var arrImages = new Array();

	// Building array of images based on location
	
	// Community Partnerships
	if( url.indexOf("/communitypartnerships/") >= 0 ) {
	
		arrImages[0] = '/images/banners/communitypartnerships/banner_partnership_v01.jpg';
		arrImages[1] = '/images/banners/communitypartnerships/banner_partnership_v02.jpg';
		arrImages[2] = '/images/banners/communitypartnerships/banner_partnership_v03.jpg';
		
	}

	// Our Environment	
	else if( url.indexOf("/ourenvironment/") >= 0 ) {
		arrImages[0] = '/images/banners/ourenvironment/environment_01.jpg';
		arrImages[1] = '/images/banners/ourenvironment/environment_02.jpg';
		arrImages[2] = '/images/banners/ourenvironment/environment_03.jpg';
	}
	
	// Our Operations
	else if( url.indexOf("/ouroperations/") >= 0 ) {
	
		if ( url.indexOf("/ouroperations/dome.asp") >= 0 ) {
			arrImages[0] = '/images/banners/ouroperations/Dome_underground_banner.jpg';
		}
		
		else if ( url.indexOf("/ouroperations/hoyle.asp") >= 0 ) {
			arrImages[0] = '/images/banners/ouroperations/Hoyle_banner.jpg';
		}
		
		else if ( url.indexOf("/ouroperations/pamour.asp") >= 0 ) {
			arrImages[0] = '/images/banners/ouroperations/Pamour_banner.jpg';
		}
		
		else if ( url.indexOf("/ouroperations/mill.asp") >= 0 ) {
			arrImages[0] = '/images/banners/ouroperations/Mill_banner.jpg';
		}
		
		else if ( url.indexOf("/ouroperations/hollinger.asp") >= 0 ) {
			arrImages[0] = '/images/banners/ouroperations/Hollinger.jpg';
		}						
		
		else {
		
			arrImages[0] = '/images/banners/ouroperations/banner_operations_v01.jpg';
			arrImages[1] = '/images/banners/ouroperations/banner_operations_v02.jpg';
			arrImages[2] = '/images/banners/ouroperations/banner_operations_v03.jpg';
			arrImages[3] = '/images/banners/ouroperations/banner_operations_v04.jpg';
			
		}
		
	}
	
	// Our People
	else if( url.indexOf("/ourpeople/") >= 0 ) {
		arrImages[0] = '/images/banners/ourpeople/banner_interior_v01.jpg';
		arrImages[1] = '/images/banners/ourpeople/banner_interior_v02.jpg';
	}
	
	// Supporting Our Economy
	else if( url.indexOf("/supportingoureconomy/") >= 0 ) {
		arrImages[0] = '/images/banners/supportingoureconomy/banner_economy_v01.jpg';
		arrImages[1] = '/images/banners/supportingoureconomy/banner_economy_v02.jpg';
		arrImages[2] = '/images/banners/supportingoureconomy/banner_economy_v03.jpg';
	}
		
	// Default to General Interior Image
	else {
		arrImages[0] = '/images/banner_ourpeople.jpg';
	}
	
	document.getElementById('imgInteriorBanner').src = arrImages[GetRandomNumber(arrImages.length)];

}

// Returns a random number between 0 and numElements
function GetRandomNumber(numElements) {

	var num = Math.floor(Math.random() * ( (numElements - 1) + 1));
	return num;

}