<div class="bt_inp_Block" id="bt_Block" >
<input type="text" class="inp_Out_color" value='выбор цвета >>' disabled="disabled" />
<input type="button" value="Color" class="start_Button" >
</div>
<script>
function sortChild (obj){
if (obj.nodeType == 1) return true;
return false
}
var obj = document.getElementById("bt_Block").childNodes;
obj = Array.prototype.filter.call(obj, sortChild);
alert(obj)
</script>