function edit(url, wname, width, height) {
		xsize = width;
		ysize = height;
		xpos = (screen.width  - xsize) / 2;
		ypos = (screen.height - ysize) / 2;
		edit = window.open(url, wname, 'status=yes, titlebar=no, scrollbars=yes, directories=0, maximized=yes, resizable=yes, width='+xsize+', height='+ysize+', top='+ypos+', left='+xpos);
    	edit.focus();
	}

	function popup(url, wname, width, height) {
		xsize = width;
		ysize = height;
		xpos = (screen.width  - xsize) / 2;
		ypos = (screen.height - ysize) / 2;
		popup = window.open(url, wname, 'status=yes, titlebar=no, scrollbars=yes, directories=0, maximized=yes, resizable=yes, width='+xsize+', height='+ysize+', top='+ypos+', left='+xpos);
    	popup.focus();
	}