How to disable right click on blogger?

Step 1 : Go to your blogger Dashboard > Layout > Add A Gadget > HTML / JavaScript
Step 2 : Copy the codes below and paste it in blogger widget that you are opening.

<script language=javascript>
<!--var message="Function Disabled!";
///////////////////////////////////
function clickIE4(){
if (event.button==2){
alert(message);
return false;
}
}
function clickNS4(e){
if (document.layers||document.getElementById&&!document.all){
if (e.which==2||e.which==3){
alert(message);
return false;
}
}
}
if (document.layers){
document.captureEvents(Event.MOUSEDOWN);
document.onmousedown=clickNS4;
}
else if (document.all&&!document.getElementById){
document.onmousedown=clickIE4;
}
document.oncontextmenu=new Function("alert(message);return false")
// --></script>

Step 3 : Save it and Done!