function randomImage(imgId) {

	// front page random image function
	var imageArray = new Array();

	// images
	imageArray[0] = "airqualitychecks.jpg";
	imageArray[1] = "boothtemperature.jpg";
	imageArray[2] = "estimatorbenchmarking.jpg";
	imageArray[3] = "healthandsafety.jpg";
	imageArray[4] = "managementinforeports.jpg";
	imageArray[5] = "paintshopprocess.jpg";
	imageArray[6] = "stockcontrolmanagement.jpg";
	imageArray[7] = "technicalserviceexcellence.jpg";
	imageArray[8] = "workshopplanningservice.jpg";

	// get random number between 0 and 9
	var randomnumber=Math.floor(Math.random()*9)
	//fo debug -> window.status= randomnumber;
	document.getElementById(imgId).src = "images/" + imageArray[randomnumber];

}


function show(showme) {
			
	//Hide all
		document.getElementById("industrial").style.display = "none";
		document.getElementById("carrefinish").style.display = "none";
		document.getElementById("commercial").style.display = "none";
		document.getElementById("motorcycles").style.display = "none";
	//show all white ones
		document.getElementById("industrial2").style.display = "block";
		document.getElementById("carrefinish2").style.display = "block";
		document.getElementById("commercial2").style.display = "block";
		document.getElementById("motorcycles2").style.display = "block";
	//show the selected block and make sure its equivalent is not showing
		document.getElementById(showme).style.display = "block";
		document.getElementById(showme+'2').style.display = "none";
	//all layers
	hideAllLayers()
}
				
function showMain(showme,changeImg) {

	// get current image source
	var currentsrc = document.getElementById(changeImg).src
	var newsrc
	
	// change img src and hide and show relevant tables
	if (currentsrc.indexOf("gbpp") != -1) {
		hideAllMainTables();
		newsrc = currentsrc.replace(/gbpp/,"gbp");
		document.getElementById(changeImg).src = newsrc;
		document.getElementById(showme).style.display = "none";
	} else {
		hideAllMainTables();
		newsrc = currentsrc.replace(/gbp/,"gbpp");
		document.getElementById(changeImg).src = newsrc;
		document.getElementById(showme).style.display = "block";
	}

}

function hideAllMainTables() {

	// tables
	document.getElementById("main_carrefinish").style.display = "none";
	document.getElementById("main_commercial").style.display = "none";
	document.getElementById("main_industrial").style.display = "none";
	document.getElementById("content").style.display = "none";

	// images
	document.getElementById("img_carrefinish").src = "images/gbp_r1_c2.gif";
	document.getElementById("img_commercial").src = "images/gbp_r1_c4.gif";
	document.getElementById("img_industrial").src = "images/gbp_r1_c5.gif";

	//all layers
	hideAllLayers()
}

function showLayer(showme) {

	// get current image source
	var currentsrc = document.getElementById("img_"+showme).src
	var newsrc
	
	// change img src and hide and show relevant tables
	if (currentsrc.indexOf("01.gif") != -1) {
		newsrc = currentsrc.replace(/01.gif/,"02.gif");
		hideAllLayers();
		document.getElementById("img_"+showme).src = newsrc;
		document.getElementById(showme).style.display = "block";
	} else {
		newsrc = currentsrc.replace(/02.gif/,"01.gif");
		hideAllLayers();
		document.getElementById("img_"+showme).src = newsrc;
		document.getElementById(showme).style.display = "none";
	}

}

function hideAllLayers() {

	// layers
	document.getElementById("octobase_01").style.display = "none";
	document.getElementById("rm_01").style.display = "none";
	document.getElementById("lechsys_01").style.display = "none";
	document.getElementById("rm2_01").style.display = "none";
	document.getElementById("lechler2_01").style.display = "none";
	document.getElementById("lechsys2_01").style.display = "none";
	document.getElementById("lechler3_01").style.display = "none";
	document.getElementById("rm3_01").style.display = "none";
	//document.getElementById("content").style.display = "none";

	// images
	document.getElementById("img_octobase_01").src = "images/prod_octobase_01.gif";
	document.getElementById("img_rm_01").src = "images/prod_rm_01.gif";
	document.getElementById("img_lechsys_01").src = "images/prod_lechsys_01.gif";
	document.getElementById("img_rm2_01").src = "images/prod_rm_01.gif";
	document.getElementById("img_lechler2_01").src = "images/prod_lechler_01.gif";
	document.getElementById("img_lechsys2_01").src = "images/prod_lechsys_01.gif";
	document.getElementById("img_rm3_01").src = "images/prod_rm_01.gif";
	document.getElementById("img_lechler3_01").src = "images/prod_lechler_01.gif";

}