Browser Opens same window from Different Link

Hi!!

      I have one verry simple question.

I am creating one web application i have some links through which i open different pages of my application.But my problem is if i open one particular page from two different machine link it opens same page.

for ex: http://pc1/abc/123.aspx

and http://pc2/abc/123.aspx

it rerfers to the same page in one browser.

it is because i have used window.open(URL,ID) and they both are refering the same ID so opening the same page and if i removes the ID it opens new page on each click rather than refreshing the page.

so is there any way i can handle this situation?

Any help is greatlly appritiable.