function urlMain(url)
{
  top.winMain = window.open(url,'mainWin');
  top.winMain.focus();
}

function urlHelp(url)
{
  top.winHelp = window.open(url,'helpWin','scrollbars=yes,width=450,height=550,left=10,top=20');
  top.winHelp.focus();
}

function urlPrint(url)
{
  top.winPrint = window.open(url,'printWin','scrollbars=yes,width=790,height=550,left=10,top=20');
  top.winPrint.focus();
}