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
                  }
                  jQuery.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;
                }
              };

$(document).ready(function() {
    $("a[href='impressum.html']").attr("href","#").click(function () { 
          Popup.open({
	                    url: 'impressumPopup.html',
	                    width: 650,
	                    height: 650,
	                    name:'_blank',
	                    location:'no',
	                    menubar:'no',
	                    toolbar:'no',
	                    status:'no',
	                    scrollbars:'yes',
	                    resizable:'no',
	                    left:'',
	                    top:'',
	                    normal:false
	   });
	   return false;
     });
});