function WOpen(url,name,params_str,width,height,scrollbars,status,resize) {
	if (!params_str) {
		params_str='';
	}
	params_str+=width?(params_str?',':'')+'width='+width:'';
	params_str+=height?(params_str?',':'')+'height='+height:'';
	params_str+=scrollbars!==(void 0)?(params_str?',':'')+'scrollbars='+scrollbars:'';
	params_str+=status!==(void 0)?(params_str?',':'')+'status='+status:'';
	params_str+=resize!==(void 0)?(params_str?',':'')+'resizable='+resize:'';
	
	new_w=window.open(url,name,params_str);
	new_w.focus();
}