var Popup = {
  open: function(options)
  {
	this.options = {
	  url: '#',
	  width: 600,
	  height: 500,
	  name:"_blank",
	  location:"no",
	  menubar:"no",
	  toolbar:"no",
	  status:"yes",
	  scrollbars:"yes",
	  resizable:"yes",
	  left:"",
	  top:"",
	  normal:false
	}
	Object.extend(this.options, options || {});

	if (this.options.normal){
		this.options.menubar = "yes";
		this.options.status = "yes";
		this.options.toolbar = "yes";
		this.options.location = "yes";
	}

	this.options.width = this.options.width < screen.availWidth?this.options.width:screen.availWidth;
	this.options.height=this.options.height < screen.availHeight?this.options.height:screen.availHeight;
	var openoptions = 'width='+this.options.width+',height='+this.options.height+',location='+this.options.location+',menubar='+this.options.menubar+',toolbar='+this.options.toolbar+',scrollbars='+this.options.scrollbars+',resizable='+this.options.resizable+',status='+this.options.status
	if (this.options.top!="")openoptions+=",top="+this.options.top;
	if (this.options.left!="")openoptions+=",left="+this.options.left;
	window.open(this.options.url, this.options.name,openoptions );
	return false;
  }
}