I need to get a client time in my asp.net page. but i can't able to call the javascri

[karthi A]

i need to get a client time to save in DB. but i can't able to get the client time. I'm using the following function
function f_SetLocalTime()
{
var now = new Date();
var month = (now.getMonth() + 1);
document.getElementById("hdnlocalDate").value = now.getDate() + '-' + (month) + '-' + now.getFullYear();
document.getElementById("hdnlocalTime").value = ('0' + now.getHours()).slice(-2) + ':' + ('0' + now.getMinutes()).slice(-2);
}

but i need to call this function with in my page load and do some operation based on that value.

private void Page_Load(object sender, System.EventArgs e)
{
// i need to call the java script function
// I'm doing some operation based on the local time
}