edit_win = null;
function openEditWindow(url,w,h, windowName){
	windowName = (windowName) ? windowName : "edit_win";
	if(edit_win != null && !edit_win.closed){ edit_win.close(); edit_win = null; }
	edit_win = window.open(url, windowName,"width="+w+",height="+h+",resizable=1,scrollbars=1");
}
asset_win = null;
function openAssetWindow(url,w,h){
	if(h > screen.height-40){
		h1 = screen.height-40;
		w = Math.round(w*h1/h);
		h = h1;
	}
	if(w > screen.width-40){
		w1 = screen.width-40;
		h = Math.round(h*w1/w);
		w = w1;
	}
	if(asset_win != null && !asset_win.closed){ asset_win.close(); asset_win = null; }
	asset_win = window.open(url+"&w="+w+"&h="+h, "asset_win","width="+w+",height="+h+",resizable=1,scrollbars=0");
}