var myWin;
var newWin;

function show_images(url) {	
	myWin = window.open(url, 'mywin', 'left=20,top=20,width=800,height=600,toolbar=1,resizable=0');	
}

function open_win(url){
	newWin = window.open(url, 'newWin', 'left=20,top=20,width=800,height=560,toolbar=0,resizable=0');	
}

function close() {	
	myWin.close;
}