function popup( url, ht, wd, windowName, rs, st, sb, mb , tb, lc, lb) {
	try{
	win.close();
	}catch(e){}
	win = window.open(url, windowName, 'height=' +ht+ ', width=' +wd+ ', resizable=' +rs+ ', status=' +st+ ', scrollbars=' +sb+ ', location=no, menubar=' +mb+  ', toolbar=' +tb+  ', location=' +lc+  ', locationbar=' +lb+  ', left=50, top=50');

	win.focus();
}