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if(document.all){
document.onselectstart= function(){return false;};
}else{
document.onmousedown= function(){return false;};
document.onmouseup= function(){return true;};
}
document.onselectstart = new Function('event.returnValue=false;');
body img
{
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}