// JavaScript Document
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var currentDetail = 2000;
function showDetail() {
	currentDetail = showDetail.arguments[0];
	// reset 4 model selection thumbnails and arrows to normal
	changeImages('img_17', 'images/img_17-20.gif', 'img_18', 'images/img_17-20.gif', 'img_19', 'images/img_17-20.gif', 'img_20', 'images/img_17-20.gif');
	changeImages('img_21', 'images/img_21.jpg', 'img_22', 'images/img_22.jpg', 'img_23', 'images/img_23.jpg', 'img_24', 'images/img_24.jpg');
	// then change active model info
	changeImages('img_12', 'images/img_12-' + currentDetail + '.gif', 'img_16', 'images/img_16-' + currentDetail + '.jpg');
	if (currentDetail == 2000) {
		document.getElementById("click-here_link").href = "equipment.clarifierportable.php";
	} else {
		document.getElementById("click-here_link").href = "equipment.model" + currentDetail + ".php";
	}
	element = document.getElementById("detail");
	switch (currentDetail) {
		case 2000:
			changeImages('img_17', 'images/img_17-over.gif', 'img_21', 'images/img_21-over.jpg');
			element.innerHTML = "The Clearwater Industries Model 2000 Portable Water Clarifier is designed for aggregate producers, dredging operations, as well as municipal treatment facilities that require portablilty. This clarifier will allow operators to take a dirty water stream and produce clean water immediately, concentrating the fines or solids to a thick state.";
			break;
		case 50:
			changeImages('img_18', 'images/img_18-over.gif', 'img_22', 'images/img_22-over.jpg');
			element.innerHTML = "The Clearwater Industries Model 50 Polymer Preparation System is designed to break down either dry or emulsion polymers that will rapidly settle suspended solids out of wastewater. The Model 50 is a low-budget, but very effective, way to properly wet dry polymers and pump the solution either to the process or to a customer-supplied aging vessel.";
			break;
		case 330:
			changeImages('img_19', 'images/img_19-over.gif', 'img_23', 'images/img_23-over.jpg');
			element.innerHTML = "The Clearwater Industries Model 330 Polymer Preparation System is designed to break down polymers and rapidly settle suspended solids out of wastewater. These systems are built to be fully automatic and very reliable. The Model 330 will deliver up to 27 pounds per hour of dry polymer, with a 30 minute mixing and aging time.";
			break;
		case 300:
			changeImages('img_20', 'images/img_20-over.gif', 'img_24', 'images/img_24-over.jpg');
			element.innerHTML = "The Clearwater Industries Model 300 Flocculant Metering and Injection System is designed to break down polymers and rapidly settle suspended solids out of wastewater. These systems are built to be fully automatic and very reliable. The Model 300 will deliver up to 27 pounds per hour of dry polymer, with a 40 minute mixing and aging time.";
			break;
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		img_05_over = newImage("images/img_05-over.gif");
		img_06_over = newImage("images/img_06-over.gif");
		img_07_over = newImage("images/img_07-over.gif");
		img_08_over = newImage("images/img_08-over.gif");
		img_12_50 = newImage("images/img_12-50.gif");
		img_12_300 = newImage("images/img_12-300.gif");
		img_12_330 = newImage("images/img_12-330.gif");
		img_21_over = newImage("images/img_21-over.jpg");
		img_22_over = newImage("images/img_22-over.jpg");
		img_23_over = newImage("images/img_23-over.jpg");
		img_24_over = newImage("images/img_24-over.jpg");
		img_27_over = newImage("images/img_27-over.gif");
		button_click_here_over = newImage("images/button_click-here-over.gif");
		img_16_50 = newImage("images/img_16-50.jpg");
		img_16_300 = newImage("images/img_16-300.jpg");
		img_16_330 = newImage("images/img_16-330.jpg");
		img_17_over = newImage("images/img_17-over.jpg");
		img_18_over = newImage("images/img_18-over.gif");
		img_19_over = newImage("images/img_19-over.gif");
		img_20_over = newImage("images/img_20-over.gif");
		button_submit_over = newImage("images/button_submit-over.gif");
		button_next_over = newImage("images/button_next-over.gif");
		button_previous_over = newImage("images/button_previous-over.gif");
		button_diagram_over = newImage("images/button_diagram-over.gif");
		button_back_over = newImage("images/button_back-over.gif");
		preloadFlag = true;
	}
}

var currentPic = 1;
function nextPic() {
	currentPic++;
	if (currentPic > noPics)
		currentPic = 1;
	changeImages('equip_pic', 'images/equip_pics/' + picName + '_' + currentPic + '.jpg');
}
function prevPic() {
	currentPic--;
	if (currentPic == 0)
		currentPic = noPics;
	changeImages('equip_pic', 'images/equip_pics/' + picName + '_' + currentPic + '.jpg');
}