/* Instructions */
$j(document).ready(move_next_instruction_slideshow);

var selected_instruction = -1;
var max_button = 3;

var instructions_buttons=new Array();
instructions_buttons[0] = 0;
instructions_buttons[1] = 0;
instructions_buttons[2] = 0;
instructions_buttons[3] = 0;

function set_instruction(itemId){
	document.getElementById('instructions-item-'+selected_instruction).style.display = 'none';
	document.getElementById('step-'+selected_instruction).style.background = 'url(img/button-middle.png) no-repeat 0 0';
	document.getElementById('step-'+selected_instruction).style.color = '#ffffff';
	instructions_buttons[selected_instruction] = 0;
	document.getElementById('instructions-item-'+itemId).style.display = 'block';
	document.getElementById('step-'+itemId).style.background = 'url(img/button-middle.png) no-repeat 0 -29px';
	document.getElementById('step-'+itemId).style.color = '#f6a61f';
	instructions_buttons[itemId] = 1;
	selected_instruction = itemId;
}

function move_next_instruction(){
	next_instruction = 0;
	if(selected_instruction<max_button){
		next_instruction = selected_instruction+1;
	}
	if(selected_instruction>-1){
		var selectedInstruction=document.getElementById('instructions-item-'+selected_instruction);
		selectedInstruction.style.display = 'none';
		document.getElementById('step-'+selected_instruction).style.background = 'url(img/button-middle.png) no-repeat 0 0';
		document.getElementById('step-'+selected_instruction).style.color = '#ffffff';
		instructions_buttons[selected_instruction] = 0;
	}
	var nextInstruction=document.getElementById('instructions-item-'+next_instruction);
	$j(nextInstruction).fadeIn('slow');
	document.getElementById('step-'+next_instruction).style.background = 'url(img/button-middle.png) no-repeat 0 -29px';
	document.getElementById('step-'+next_instruction).style.color = '#f6a61f';
	instructions_buttons[next_instruction] = 1;
	selected_instruction = next_instruction;	
}

function move_next_instruction_slideshow(){
	if (document.getElementById('homepage') != null) {
		var t=setTimeout("move_next_instruction_slideshow()",8000);
		move_next_instruction();
	}
}

function set_instructions_button_hover(itemId){
	if(instructions_buttons[itemId]==0){
		document.getElementById('step-'+itemId).style.background = 'url(img/button-middle.png) no-repeat 0 -29px';
		document.getElementById('step-'+itemId).style.color = '#f6a61f';
	}
}

function unset_instructions_button_hover(itemId){
	if(instructions_buttons[itemId]==0){
		document.getElementById('step-'+itemId).style.background = 'url(img/button-middle.png) no-repeat 0 0';
		document.getElementById('step-'+itemId).style.color = '#ffffff';
	}
}