function eXcell_acheck(cell) {
    try {
        this.cell = cell;
        this.grid = this.cell.parentNode.grid;
        this.cell.obj = this
    } catch(er) {
    }
    this.changeState = function() {
        if ((!this.grid.isEditable) || (this.cell.parentNode._locked) || (this.isDisabled())) return;
        if (this.grid.callEvent("onEditCell", [0,this.cell.parentNode.idd,this.cell._cellIndex]) != false) {
            this.val = this.getValue()
            if (this.val == "1")this.setValue("<checkbox state='false'>")
            else
                this.setValue("<checkbox state='true'>")

            this.cell.wasChanged = true;
            this.grid.callEvent("onEditCell", [1,this.cell.parentNode.idd,this.cell._cellIndex]);
            this.grid.callEvent("onCheckbox", [this.cell.parentNode.idd,this.cell._cellIndex,(this.val != '1')])
        } else {
            this.editor = null
        }
    };
    this.getValue = function() {
        try {
            return this.cell.chstate.toString()
        } catch(er) {
            return null
        }
    };
    this.isCheckbox = function() {
        return true
    };
    this.isChecked = function() {
        if (this.getValue() == "1")
            return true; else
            return false
    };
    this.setChecked = function(fl) {
        this.setValue(fl.toString())
    };
    this.detach = function() {
        return this.val != this.getValue()
    };
    this.drawCurrentState = function() {
        if (this.cell.chstate == 1)return "<div onclick='(new eXcell_acheck(this.parentNode)).changeState();(arguments[0]||event).cancelBubble=true;' style='cursor:pointer;font-weight:bold;text-align:center;'><img height='13px' src='" + this.grid.imgURL + "green.gif'>&nbsp;是</div>"; else
            return "<div onclick='(new eXcell_acheck(this.parentNode)).changeState();(arguments[0]||event).cancelBubble=true;' style='cursor:pointer;text-align:center;'><img height='13px' src='" + this.grid.imgURL + "red.gif'>&nbsp;否</div>"
    }
}
;
eXcell_acheck.prototype = new eXcell;
eXcell_acheck.prototype.setValue = function(val) {
    val = (val || "").toString();
    if (val.indexOf("1") != -1 || val.indexOf("true") != -1) {
        val = "1";
        this.cell.chstate = "1"
    } else {
        val = "0";
        this.cell.chstate = "0"
    }
    ;
    var obj = this;
    this.setCValue(this.drawCurrentState(), this.cell.chstate)
};