function openChild(file,window){
    childWindow=open(file,window,'resizable=yes,width=450,height=400,scrollbars=yes');
    if (childWindow.opener == null) childWindow.opener = self;
}
function openWithSelfMain(url,name,width,height){
	var options = "width=" + width + ",height=" + height + "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no";
	new_window = window.open(url, name, options);
	window.self.name = "main";
	new_window.moveTo(((screen.availWidth/2)-(width/2)),((screen.availHeight/2)-(height/2)))
	new_window.focus();
}