/* optionaltime.usemedia.com :: joes koppers ::: 08.2002, rev 03.2003 */
/* thnx for reading this code */


current_id = 0;
current_fig = 0;
positions = new Array(70,150,310,440);
images = new Array('','','')

function subject(id) {
	//reset images first
	fig(current_fig);
	
	if (id==current_id) { 
		//reset if active already
		document.getElementById('greendiv').style.visibility = 'hidden';
		current_id = 0;
	} else {
		for (var i=1; i<5; i++) {
			//tmp put the active subject on top
			document.getElementById('subject'+i).style.zIndex = (id==i)? 4:2;
			//show the green
			if (id==i) {
				document.getElementById('greendiv').style.left = positions[i-1] +"px";
				document.getElementById('greendiv').style.visibility = 'visible';
			}
		}
		//remember where we are
		current_id = id;
	}
}

function fig(id) {
	if (id==current_fig) {
		document.getElementById('imagediv').innerHTML = '';
		current_fig = 0;
	} else if (current_id==3) {
		document.getElementById('imagediv').innerHTML = '<img src=/optionaltime/1/media/fig'+id+'.jpg style="width:390;">';
		current_fig = id;
	}
}