function popUp(URL,height,width)
{
         if(!width)
         {
                   if(!height)
                      height=460;
                   scrollbar="scrollbars=yes,";
                   width=502;
                   if(height > 500) {   scrollbar="scrollbars=yes,"; width=520;}

}
else
{
    if(!height)
       height=400;
    scrollbar="scrollbars=yes,";
}
window.open(URL,"",scrollbar+"width="+width+",height="+height+",resizable=1,left=40,top=40,toolbar=yes,location=yes");
}