function pop(url) {
				var left = Math.floor((screen.availWidth - 800) / 2);
				var top  = Math.floor((screen.availHeight - 700) / 2);
				window.open(url,"","height=700,scrollbars=yes,width=800,left="+left+",top="+top);
}
	


function pop_large(url) {
				var top  = 100;
				var left = 20;
				var width = screen.availWidth-100;
				window.open(url,"","height=400,scrollbars=yes,width="+width+",resizable=yes,left="+left+",top="+top);
}
	

function pop_large2(url,width,height) {
				var top  = 100;
				var left = 20;
				window.open(url,"","height="+height+",scrollbars=yes,width="+width+",resizable=yes,left="+left+",top="+top);
}