if (document.images)  {

       var      item = 0;
       
        
   			 first = new Image;
   			 second = new Image;
   			 third = new Image;
   			 fourth = new Image;
   			 fifth = new Image;
   			 sixth = new Image;
   			 seventh = new Image;
   			 eighth = new Image;
   			 nineth = new Image;

   			 
   			 first.src = "portfolio/04-05.jpg";
   			 second.src = "portfolio/06-07.jpg";
   			 third.src = "portfolio/08-09.jpg";    	        
   			 fourth.src = "portfolio/10-11.jpg";
   			 fifth.src = 'portfolio/12-13.jpg';
   			 sixth.src = 'portfolio/14-15.jpg'; 
   			 seventh.src = 'portfolio/16-17.jpg';
   			 eighth.src = 'portfolio/18-19.jpg'; 



             

          /* get values from database, assign to objects, and enter object name in array if has a value != none */  		 
          var   aitem = 0; 
                pics = new Array(); 
     

                   pics[aitem] = "first"; 
                   aitem = aitem + 1     
                 
                    pics[aitem] = "second";
                    aitem = aitem + 1       
                 
                    pics[aitem] = "third";
                    aitem = aitem + 1       
                
                    pics[aitem] = "fourth"; 
                    aitem = aitem + 1      
                
                    pics[aitem] = "fifth"; 
                    aitem = aitem + 1  
                    
                  
                    pics[aitem] = "sixth"; 
                    aitem = aitem + 1  
                    
                  
                    pics[aitem] = "seventh"; 
                    aitem = aitem + 1  
                    
                  
                    pics[aitem] = "eighth"; 
                    aitem = aitem + 1   
                    
        
                    
              var   imgNum = pics.length; /* get length to set up button values */
            
            
             }

        function increment() {
  		  if(item == imgNum -1)
  		    {item  = 0;} 
  		       else 
  		         {item  = item  + 1;} 
  		
  		  chgimg('swap', item )
  		}
  		
  		function decrement() {
  		 if(item  == parseInt(0, 10))  
  		   {item  = imgNum - 1;} 
  		       else 
  		        {item = item  - 1;} 
  		       
  		  chgimg('swap', item );
  		}
         
         
         
          function chgimg(imgField, item) {          
       	 if (document.images) { 

       	        if(pics[item] == "first")
       	          first.src = "portfolio/04-05.jpg";
       	      
       	        if(pics[item] == "second")
       	            second.src = "portfolio/06-07.jpg";
       	       
       	        if(pics[item] =="third")
       	             third.src = "portfolio/08-09.jpg";
       	        
       	         if(pics[item] == "fourth")
                       fourth.src = "portfolio/10-11.jpg";
                         
       	         if(pics[item] == "fifth")   
       	              fifth.src = 'portfolio/12-13.jpg';
        	    
        	    if(pics[item] == "sixth")   
       	              sixth.src = 'portfolio/14-15.jpg'; 
       	              
          	    if(pics[item] == "seventh")   
       	              seventh.src = 'portfolio/16-17.jpg';
       	              
       	        if(pics[item] == "eighth")   
       	               eighth.src = 'portfolio/18-19.jpg'; 
       	              
       	              

       	      
           	document[imgField].src = eval( pics[item] + ".src")    
            }
         }