Hi everyone,
I am new to salesforce,actually i had param field with value as some URL.Now i need to copy that url on  ClipBoard by using a button Copy.Can any one please help me out.Thanks in advance.
This is my vf page.


<apex:page controller="one"> 

<apex:messages />
<script language="JavaScript">
        function ClipBoard(copytextid){
            copyToClipboard(copytextid);
        }
        function copyToClipboard(elementId) {
          // Create an auxiliary hidden input
          var aux = document.createElement("input");
          // Get the text from the element passed into the input
          aux.setAttribute("value", document.getElementById(elementId).innerHTML);
          // Append the aux input to the body
          document.body.appendChild(aux);
          // Highlight the content
          aux.select();
          // Execute the copy command
          document.execCommand("copy");
          // Remove the input from the body
          document.body.removeChild(aux);
        }    
    </script>   

    <apex:form > 
        <apex:pageBlock id="one"> 
           <apex:pageBlockSection >
                    <apex:commandButton value="Generate" reRender="one">                     
                    <apex:param name="RURL" value="{!$Page.Pagee}" assignTo="{!accid}"/> 
                    </apex:commandButton>
               </apex:pageBlockSection>
                <apex:pageBlockSection >                
                Your Referral Link<apex:inputText id="copyText" value="{!accid}"/>                
                <apex:pageBlockSectionItem >
                <apex:commandbutton onClick="ClipBoard('{!$Component.copytext}');" rerender="one" value="Copy to Clipboard"/> 
                </apex:pageBlockSectionItem>
            </apex:pageBlockSection> 
            </apex:pageBlock> 
    </apex:form> 
</apex:page>