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