javascript - How to make alert box appears above the current webpage in the browser -


i working vb.net , javascript , when prompt alert box backside page goes blank. learned due post back. there way make alert box appear above current page.

i used below code in submit function:

if true response.write("<script language=""javascript"">alert('hi!');</script>") txtbox1.focus() return end if

the alert box appears below: enter image description here


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