<!--
var layer_number;
var header_layer_heights;
var content_layer_heights;
var top_offset = 120;
var which_one = 0;
var counter = 0;
var document_height_counter;

function initialise_layers(number_of_layers) {
	layer_number = number_of_layers;
	header_layer_heights = new Array(number_of_layers);
	content_layer_heights = new Array(number_of_layers);
	if (usesAll) {
		top_offset = top_offset + document.all['formContent'].offsetHeight;
	}
	else {
		top_offset = top_offset + document.layers['formContent'].document.height;
	}
	for (tempx=1; tempx<=number_of_layers; tempx++) {
		if (usesAll) {
			header_layer_heights[tempx] = eval("document.all['formContentAdvancedHeader" + tempx + "'].offsetHeight;");
			content_layer_heights[tempx] = eval("document.all['formContentAdvancedContent" + tempx + "'].offsetHeight;");
		}		
		else {
			header_layer_heights[tempx] = eval("document.layers['formContentAdvancedHeader" + tempx + "'].document.height;");
			content_layer_heights[tempx] = eval("document.layers['formContentAdvancedContent" + tempx + "'].document.height;");
		}		
	}
	position_layers();
}


function position_layers() {
	counter = top_offset;
	document_height_counter = top_offset;

	for (tempy=1; tempy<=layer_number; tempy++) {
		if (usesAll) {
			var handle = eval("document.all['formContentAdvancedHeader" + tempy + "']");
			handle.style.top = counter;
			var handle = eval("document.all['formContentAdvancedHeader" + tempy + "b']");
			handle.style.top = counter;
			counter = counter + header_layer_heights[tempy];
			if (tempy == which_one) {
				var handle = eval("document.all['formContentAdvancedHeader" + tempy + "']");
				handle.style.visibility = "hidden";
				var handle = eval("document.all['formContentAdvancedHeader" + tempy + "b']");
				handle.style.visibility = "visible";
				var handle = eval("document.all['formContentAdvancedContent" + tempy + "']");
				handle.style.visibility = "visible";
				handle.style.top = counter;
				counter = counter + content_layer_heights[tempy];
			}
			else {
				var handle = eval("document.all['formContentAdvancedHeader" + tempy + "']");
				handle.style.visibility = "visible";
				var handle = eval("document.all['formContentAdvancedHeader" + tempy + "b']");
				handle.style.visibility = "hidden";
				var handle = eval("document.all['formContentAdvancedContent" + tempy + "']");
				handle.style.visibility = "hidden";
			}
		document.all['formContentBottom'].style.top = counter;
		}
		else {
			var handle = eval("document.layers['formContentAdvancedHeader" + tempy + "']");
			handle.top = counter;
			var handle = eval("document.layers['formContentAdvancedHeader" + tempy + "b']");
			handle.top = counter;
			counter = counter + header_layer_heights[tempy];
			document_height_counter = document_height_counter + header_layer_heights[tempy];
			if (tempy == which_one) {
				var handle = eval("document.layers['formContentAdvancedHeader" + tempy + "']");
				handle.visibility = "hidden";
				var handle = eval("document.layers['formContentAdvancedHeader" + tempy + "b']");
				handle.visibility = "visible";
				var handle = eval("document.layers['formContentAdvancedContent" + tempy + "']");
				handle.visibility = "visible";
				handle.top = counter;
				counter = counter + content_layer_heights[tempy];
				document_height_counter = document_height_counter + content_layer_heights[tempy];
			}
			else {
				var handle = eval("document.layers['formContentAdvancedHeader" + tempy + "']");
				handle.visibility = "visible";
				var handle = eval("document.layers['formContentAdvancedHeader" + tempy + "b']");
				handle.visibility = "hidden";
				var handle = eval("document.layers['formContentAdvancedContent" + tempy + "']");
				handle.visibility = "hidden";
			}
		document.layers['formContentBottom'].top = counter;
		}
	}
	if (!usesAll) {
		document_height_counter = document_height_counter + document.layers['formContentBottom'].document.height;
		document.height = document_height_counter;
	}
}

function change_layer_status(whichone) {
	if (which_one == whichone) {
		which_one = 0;
	}
	else {
		which_one = whichone;
	}
	position_layers();
}
//-->