/**
 * contextmenu Prohibition
 */

function prohibition(){
	for(var i=0;i<document.images.length;i++){
		if(document.all){
			document.images[i].oncontextmenu=cancelmenu;
		}
		else {
			document.images[i].addEventListener('contextmenu', cancelmenu, false);
		}
	}
};
function cancelmenu (e) {
	if(e){
		e.stopPropagation();
	}
	return false;
}
window.onload = prohibition;