Ajax / Jquery progress bar with manual percentage update from code side

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C#2.0

C#3.0

C#

Hello Friends ,
I am having an default.aspx page in which there is a function UpdateProgressBar(),
which is getting call by delegate call from another cs class.

UpdateProgressBar(int percentage)
{
//here i want to update my progress bar manually without fully postback (Ajax / Jquery)
progressbar1.text = percentage;
}

So please help me in creating Ajax / Jquery progress bar with percentage of progress ,which i can update inside funtion UpdateProgressBar()

Thanks in advance :)