This method is used to prevent the selection of HTML page elements.

disableSelection.js

function disableSelection(target){
	if (typeof target.onselectstart!="undefined") // if IE
		target.onselectstart=function(){return false}
	else if (typeof target.style.MozUserSelect!="undefined") // if Firefox
		target.style.MozUserSelect="none";
	else // others
		target.onmousedown=function(){return false;
	}
}