if(B==-1){return false;}if(this.fireEvent("beforeremove",this.ownerTree,this,A)===false){return false;}this.childNodes.splice(B,1);if(A.previousSibling){A.previousSibling.nextSibling=A.nextSibling;}if(A.nextSibling){A.nextSibling.previousSibling=A.previousSibling;
}if(this.firstChild==A){this.setFirstChild(A.nextSibling);}if(this.lastChild==A){this.setLastChild(A.previousSibling);}A.setOwnerTree(null);A.parentNode=null;A.previousSibling=null;A.nextSibling=null;this.fireEvent("remove",this.ownerTree,this,A);return A;
},insertBefore:function(A,B){if(!B){return this.appendChild(A);}if(A==B){return false;}if(this.fireEvent("beforeinsert",this.ownerTree,this,A,B)===false){return false;}var C=this.childNodes.indexOf(B);var D=A.parentNode;var E=C;if(D==this&&this.childNodes.indexOf(A)<C){E--;
if(B==-1){return false;}if(this.fireEvent("beforeremove",this.ownerTree,this,A)===false){return false;}this.childNodes.splice(B,1);if(A.previousSibling){A.previousSibling.nextSibling=A.nextSibling;}if(A.nextSibling){A.nextSibling.previousSibling=A.previousSibling;
}if(this.firstChild==A){this.setFirstChild(A.nextSibling);}if(this.lastChild==A){this.setLastChild(A.previousSibling);}A.setOwnerTree(null);A.parentNode=null;A.previousSibling=null;A.nextSibling=null;this.fireEvent("remove",this.ownerTree,this,A);return A;
},insertBefore:function(A,B){if(!B){return this.appendChild(A);}if(A==B){return false;}if(this.fireEvent("beforeinsert",this.ownerTree,this,A,B)===false){return false;}var C=this.childNodes.indexOf(B);var D=A.parentNode;var E=C;if(D==this&&this.childNodes.indexOf(A)<C){E--;