var newWindow;
 
 function _popup(site)
 {
    var pop_height = screen.height *.70
    var options = "height=" + pop_height + ",width=575,top=0,left=0,status=no,toolbar=yes,menubar=yes,location=no,scrollbars=yes,resizable=yes"
    
    //alert("site: " + site);
    if ( newWindow != null ) 
	{ 
  		if ( newWindow.closed ) {  
			newWindow = window.open(site,'',options); 
    		} else { 
			newWindow.location = site;  
			newWindow.focus();   
		} 
 	} else {  
		newWindow = window.open(site,'',options) 
	} 
  }
  
  function showStatus(msg)
  {
  	   window.status = msg;
  }