function preview()   
  {	  
  bdhtml=window.document.body.innerHTML; 
   sprnstr="<!--startprint-->"; 
  eprnstr="<!--endprint-->";   
//alert(bdhtml);
  prnhtml=bdhtml.substr(bdhtml.indexOf(sprnstr)+17);   
  prnhtml=prnhtml.substring(0,prnhtml.indexOf(eprnstr));   
  window.document.body.innerHTML=prnhtml;   //Text
    //window.open();
  window.print();  
//alert(prnhtml)
  }