var poc = 0;


function showInfo(imWidth,imHeight,winFile)  
    { 
      if (poc !== 0) { iwin.close(); }; 
     
      url = winFile; 
      resStr = "resizable=0,scrollbars=1";

                                             // define window oversize
      winPlusWidth = 0;
      winPlusHeight = 0;
                                             // calculate window size
      winHeight = imHeight + winPlusHeight;
      winWidth = imWidth + winPlusWidth;
                                             // test if the window is not too large
		heightOK = true;
		
      if (winHeight>screen.availHeight)
        {
         winHeight = screen.availHeight-80;
      	 resStr=",resizable=1,scrollbars=1";
    	 heightOK = false;
      	}
      	
      if (heightOK==false)
        { 
         winWidth = winWidth+22;
      	}	
      								 
      if (winWidth>screen.width)
        { 
          winWidth = screen.width-80;
      	  resStr=",resizable=1,scrollbars=1";
      	}								 

                                                        // calculate centered window position
      winLeft = Math.round((screen.width-winWidth)/2);
      winTop  = Math.round((screen.availHeight-winHeight)/2);

      iwin = window.open(url, "", "left="+winLeft+",top="+winTop+",height="+winHeight+",width="+winWidth+",directories=no,location=no,menubar=no,status=no,toolbar=no,resizable=0,scrollbars=yes");
      
      poc++;
      return true;
    }





   function toggle(targetId) {
     	
     	if(document.getElementById) {
         target = document.getElementById(targetId);
           if(target.style.display == "none")  {
             target.style.display = "";
           }
             else {
                  target.style.display = "none";
             }
       }
     	
     } // end function