var initBody; 
function beforePrint() { 
initBody = document.body.innerHTML; document.body.innerHTML = idPrint.innerHTML; 
} 
function afterPrint() {  
document.body.innerHTML = initBody; 
} 
//function printArea() { 
//window.print(); 
//} 
//window.onbeforeprint = beforePrint; window.onafterprint = afterPrint; 

function printArea() {
 window.onbeforeprint = hideDivs;
 window.onafterprint = showDivs;
 window.print();
}
function hideDivs() {
 document.getElementById("area").style.display = 'block';
 document.getElementById("print_area").innerHTML = document.getElementById("area").outerHTML;
 document.getElementById("area").style.display = 'none';
 document.getElementById("no_area").style.display = 'none';
}
function showDivs() {
 document.getElementById("area").style.display = 'none';
 document.getElementById("no_area").style.display = 'block';
 document.getElementById("print_area").innerHTML = "";
}