php - Hide and Show TextBox in Javascript -


i trying hide , show box using following code. work box displayed default. can hide box , display on click? onclick works hide box.

<script type="text/javascript"> function display(id) { var obj = document.getelementbyid(id) if (obj.style.display == "none") { obj.style.display = "block"     } else {     obj.style.display = "none"     } return false } </script>   <form> <input type="button" value="customize" onclick="display('box1_<?=$pd_id?>')"> <input type="submit"> </form>

addthe following either in stylesheet or inline styling 

style="display: none;"

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