var JPic_alpha = 100;
var JPic_busy = 0;

function JPic_ChangePic(thumb) {
	if(JPic_busy == 0) { JPic_busy = 1;
		document.getElementById('JPic_main').style.backgroundImage = document.getElementById('JPic_thumb_' + thumb + '').style.backgroundImage.replace(/thumbs/, "");
		JPic_Reset_Focus();
		ChangeOpacity('JPic_thumb_' + thumb + '', 50);
		JPic_ChangePic_Stage2();
	}
}

function JPic_ChangePic_Stage2() {
	if(JPic_alpha ==  10 ) { 
		document.getElementById('JPic_main2').style.backgroundImage = document.getElementById('JPic_main').style.backgroundImage;
		setTimeout(JPic_ChangePic_Stage3, 300);
		JPic_alpha = 100;
	}
	else {
		JPic_alpha = JPic_alpha - 10;
		ChangeOpacity('JPic_main2', JPic_alpha);
		setTimeout(JPic_ChangePic_Stage2, 40);
	}
}

function JPic_ChangePic_Stage3() { ChangeOpacity('JPic_main2', 100); JPic_busy = 0; }

function JPic_Reset_Focus() {
	var JPic_thumb_var = 0;
	while (JPic_thumb_var <= 20) {
		JPic_thumb_var ++;
		if(window.document.getElementById('JPic_thumb_' + JPic_thumb_var + '')!=null) { 
			ChangeOpacity('JPic_thumb_' + JPic_thumb_var + '', 100);
		}
	}
}