function lib_open_img_window(src,width,height){
   if(width==0)
     width=500;
   width+=20;
   if(height==0)
     height=400;
   height+=20;
   if(height>600)
     height=600;
   var left = (screen.availWidth/2) - (width/2);
   var top = (screen.availHeight/2) - (height/2);
   info=window.open('/img_preview.php?src='+src,'info','resizable=1, scrollbars=1, toolbar=0, status=0, width='+width+', height='+height+', left='+left+', top='+top);
   info.focus();
 }

function open_window(src, width, height){
   if(width==0)   width=500;
   width+=20;
   if(height==0)  height=400;
   height+=20;
//   if(height>800)  height=800;
   var left = (screen.availWidth/2) - (width/2);
   var top = (screen.availHeight/2) - (height/2);
   info=window.open(src,'photo','resizable=1, scrollbars=1, toolbar=0, status=0, width='+width+', height='+height+', left='+left+', top='+top);
   info.focus();
 }



			  function menuhide(menunum){
				var currentmenu = document.getElementById("navbody" + menunum);
				currentmenu.style.visibility = 'hidden';
			  }
			  function menushow(menunum){
				var currentmenu = document.getElementById("navbody" + menunum);
				currentmenu.style.visibility = 'visible';
			  }