function setId(){
		 	var id;
		 } 
	function checkNav(next_img_id,count){
		
		elm_nxt_act = document.getElementById('nav_next');
		elm_nxt_dis = document.getElementById('nav_dis');
		
		if(next_img_id == (count-1) ){
			elm_nxt_act.style.display = 'none';
			elm_nxt_dis.style.display = '';
		}
		else{
			elm_nxt_act.style.display= 'block';
			elm_nxt_dis.style.display = 'none';
		}
		elm_prv_act = document.getElementById('nav_prev');
		elm_prv_dis = document.getElementById('nav_dis_prev');
      
		if(next_img_id == 0 ){
			elm_prv_act.style.display="none";
			elm_prv_dis.style.display="";
		}
		else{
			elm_prv_act.style.display="";
			elm_prv_dis.style.display="none";
		}
	
	}	 
	function updatercomplete(next_img_id,count){
		document.getElementById('next_img_id').innerHTML = Number(next_img_id);
		
		checkNav(next_img_id,count);
	}	
		
	function updatercomplete_prev(next_img_id,count){
		document.getElementById('next_img_id').innerHTML = Number(next_img_id);
		
		checkNav(next_img_id,count);
	}
	
	
	function updatercreate(){
		
		document.getElementById(setid.id).innerHTML="<br /><span style='width:100%;padding-left:75px;'><img src='images/loading.gif' alt='Loading' align='middle' border='0'></span>";
		//alert("abc===");
		}
	 function ajaxUpdater(id,url,next_img_id,count,n) 
		   {  
			//alert(id+"  "+url); 
		   	setid=new setId();
		    setid.id=id;
			if(n=="next"){
			 new Ajax.Updater(id,url+'&start='+next_img_id,
							  {
							  asynchronous:true,
							  onComplete:updatercomplete(next_img_id,count),
							  onCreate:updatercreate()
							  }
							  
							  
							  );  
					}
					
			else{
				 new Ajax.Updater(id,url+'&start='+next_img_id,
							  {
							  asynchronous:true,
							  onComplete:updatercomplete_prev(next_img_id,count),
							  onCreate:updatercreate()
							  }
							  
							  
							  );  
				}
				
		   }
		     
	
	/**********************************************************************************/
	// for text editor
	
	function textEditor(loadID,loadUrl){
	
	ajaxUpdaterEditor(loadID,loadUrl);
	
	
	function ajaxUpdaterEditor(id,url) 
		   {  
		    //alert(id+"  "+url); 
		   	setid=new setId();
		    setid.id=id;
			 new Ajax.Updater(id,url,{asynchronous:true});   
		   }
		     
	var myGlobalHandlersEditor = {
		onCreate: function(request){
			
			document.getElementById(setid.id).innerHTML="<br /><span style='width:100%;padding-left:75px;'><img src='images/loading.gif' alt='Loading' align='middle' border='0'></span>";
			
			//alert(document.getElementById(setid.id).innerHTML);
			//Element.show('systemWorking');
		},

		onComplete: function() {
			
			if(Ajax.activeRequestCount == 0){
				//Element.hide('systemWorking');
				//alert(request.responseText);
				
				//generate_wysiwyg('msgUser');
				//setTimeout(fillup(),1000);
			}
		}
	};
 
	Ajax.Responders.register(myGlobalHandlersEditor);
	
	}
	
	
	
	
	/**********************************************************************************/