var preload_status = false;

function preloadPlan() 
{
	if (document.images) 
	{
		w_screws = new Image();
		w_screws = 	"../images/watchmaking/watch/w_screws.png";
		
		w_springbars = new Image();
		w_springbars = "../images/watchmaking/watch/w_springbars.png";
		
		w_pins_tubes = new Image();
		w_pins_tubes = "../images/watchmaking/watch/w_pins_tubes.png";
		
		w_pushers_clicks = new Image();
		w_pushers_clicks = "../images/watchmaking/watch/w_pushers_clicks.png";
		
		w_clasps = new Image();
		w_clasps = "../images/watchmaking/watch/w_clasps.png";
	
		preload_status = true;
	}
}


function plan(image)
{			
	if (document.getElementById('watch'))
	{
		if (!image || preload_status == false)
		{
			document.getElementById('watch').src = '../images/watchmaking/watch/watch.png';
		}
		else
		{
			switch(image)
			{
				case 1	:	document.getElementById('watch').src = w_screws;
				break;
				
				case 2	:	document.getElementById('watch').src = w_springbars;
				break;
				
				case 3	:	document.getElementById('watch').src = w_pins_tubes;
				break;
				
				case 4	:	document.getElementById('watch').src = w_pushers_clicks;
				break;
				
				case 5	:	document.getElementById('watch').src = w_clasps;
				break;
				
				default	:	document.getElementById('watch').src = watch;
			}
		}
	}
}