guys i try to make a very basic image gallery, having left and right links to switch the images. thats it. i am newbie to js, so try to do it by myself. Here is the code, which is not working: Code: <html> <head> <title></title> </head> <body> <img src="" id="img" /> <a id="lt" href="" onclick="left()">left</a> <a id="rt" href="" onclick="right()">right</a> <script type="text/javascript"> var ary1 = ["rcurv.gif","lcurv.gif","midl.gif","plus.gif"]; var num=0; function right(){ document.getElementById('img').src=ary1[num++]; } function left(){ document.getElementById('img').src=ary1[num--]; } </script> </body> </html> Please help me with the code.