javascript调用未传递正确的值

I want to pass one tables id to a javascript. its working for the values 1,2,3,... but the actual value i want to send is 001,002,003,.... But for these values its not working.
The value showing in console and getting in javascript function are as follows

001->1  
002->2  
.  
.  
009->9   
010->8  
011->9   
012->10  
.  
.

php code is

<td> <a style="text-decoration:none; " href="#" onclick="updateCaste('.$rows['caste_code'].')" ><img src="prjct/edit-icon.png" width="20" height="20"> </a></td>

javascript code is

function updateCaste(x)
{
        alert(x);
}

Plz somebody help me to solve this problem..

Put quotes around the value so it will be treated as a string, not a number:

<td> <a style="text-decoration:none; " href="#" onclick="updateCaste(\''.$rows['caste_code'].'\')" ><img src="prjct/edit-icon.png" width="20" height="20"> </a></td>