@echo off
:: this line can be changed
set CmdLine=/VERYSILENT /NORESTART /PDFVINBROWSER/NODESKICON

set InstExe=PDFXvwer.exe
<nul set /p $var=Installing PDF-XChange PDF Viewer...
start "" "%~1\%InstExe%" %CmdLine%
echo OK
del %0 >nul