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_off(src, id, 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) - 50;
   info=window.open('/'+src+'?id='+id,'aaa','resizable=1, scrollbars=1, toolbar=0, status=0, width='+width+', height='+height+', left='+left+', top='+top);
   info.focus();
 }

 function open_window(win,params,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);
   if(params!='')
     win+=params
   info=window.open(win,'info','resizable=1, scrollbars=1, toolbar=0, status=0, width='+width+', height='+height+', left='+left+', top='+top);
   info.focus();
 }


var isDOM = (document.getElementById ? true : false); 
var isIE4 = ((document.all && !isDOM) ? true : false);
var isNS4 = (document.layers ? true : false);

function getRef(id,path) {
if(!path)
  path=document;
if (isDOM) return path.getElementById(id);
if (isIE4) return path.all[id];
if (isNS4) return path.layers[id];
}

function DoMenu(id) {
    var item = null;
    if (document.getElementById) {
        item = document.getElementById(id);
    }
    else if (document.all) {
        item = document.all[id];
    }
    else if (document.layers) {
        item = document.layers[id];
    }
    if (!item) {
    }
    else if (item.style) {
        if (item.style.display == "none") {
            item.style.display = "";
        }
        else {
            item.style.display = "none";
        }
    }
    else {
        item.visibility = "show";
    }
}

function open_catalog_show(){
    var it = getRef('catalogshow');
    if(it){
      it.style.display = "block";
    }

}