Javascript developed to create button in form on Formload event in crm 2013 is not working in crm 2015?

function MakeButtonChangeMailToLocation() { 
        var atrname = "new_address1button";
        if (document.getElementById(atrname ) != null) {
        var fieldId = "field" + atrname ;
        if (document.getElementById(fieldId ) == null) {
            var elementId = document.getElementById(atrname + "_d");
            var div = document.createElement("div");
            div.style.width = "100px";
            div.style.textAlign = "right";
            div.style.display = "inline";
            elementId .appendChild(div, elementId ); var show = Xrm.Page.getAttribute("address1_name").getValue();
            div.innerHTML = '<button id="' + fieldId + '"  type="button" style="margin-center: 3px; width: 30%;" >select address  &#x25BC;</button>';
            document.getElementById(atrname).style.width = "0%";
            document.getElementById(fieldId ).onclick = function () {Xrm.Page.ui.controls.get('Select_Address').setVisible(true); 
Xrm.Page.ui.tabs.get("general").sections.get("general_section_5").setVisible(true); 
Xrm.Page.ui.tabs.get("general").sections.get("general_section_8").setVisible(true); };
			        }
    }
}