function openWindow( URL, winName, width, height, center){ 
//onclick="openWindow('print.asp?articleID=DST','print',640,500,1);"
      xposition=0; yposition=0; 
        if ((parseInt(navigator.appVersion) >= 4 ) && (center)){ 
            xposition = (screen.width - width) / 2; 
            yposition = (screen.height - height) / 2; 
        } 
        args = "width=" + width + "," 
        + "height=" + height + "," 
        + "location=0," 
        + "menubar=1," 
        + "resizable=1," 
        + "scrollbars=1," 
        + "status=0," 
        + "titlebar=0," 
        + "toolbar=0," 
        + "hotkeys=0," 
        + "screenx=" + xposition + ","  //NN Only 
        + "screeny=" + yposition + ","  //NN Only 
        + "left=" + xposition + ","     //IE Only 
        + "top=" + yposition;           //IE Only 


      window.open( URL , winName , args ); 
}