The login form is not showing there. I am new to magento can anyone help me to solve this issue.
If there is more than one jquery library. then remove it. Use only one library in page.
<reference name="head"> <action method="addJs" name="jquery" as="jquery"> <script>jquery.js</script> </action> <action method="addJs"> <script>noconflict.js</script> </action> </reference>
noconflict.js would simply be
Fore more information take a look at here : https://stackoverflow.com/questions/11175941/magento-jquery-conflict
Hope this make sense to you
Try to replace prototype.js file from fresh magento backup