step1 = 'irftrnsp1.html';
   step2 = 'irftrnsp2.html';
   step3 = 'irftrnsp3.html';
   step4 = 'irftrnsp4.html';
   step5 = 'irftrnsp5.html';
   options = 'toolbar=0,status=0,menubars=0,scrollbars=1,resizable=1,width=600,height=500,left=10,top=10';
   function popWin(url) {
    pWin = window.open(url,'popup',options);
   }