function winopen(url,width,height,offx,offy,tag,name,sbar){
	var _url=url;
	var _width=width;
	var _height=height;
	var _offx=offx;
	var _offy=offy;
	var _tag=tag;
	var _name=name;
	var _sbar=sbar;
	
	if(_name==undefined){
		_name="winna";
	}
	
	if(_sbar==undefined){
		_sbar="yes";
	}
	
	var sx;
	var sy;
	
	if(_tag==undefined){
		_offx=window.screen.width/2-_width/2;
		_offy=window.screen.height/2-_height/2;
	}else{
		if(tag=="br"){
			_offx=window.screen.width-_width-5-_offx;
			_offy=window.screen.height-_height-50-_offy;
		}
	}
	var newwin=window.open(_url,_name,'width='+_width+',height='+_height+',left='+_offx+',top='+_offy+',toolbar=no,menubar=no,scrollbars='+_sbar+',resizable=no,location=no,status=no');
	newwin.focus();
}