When click yourBtn, the functions work but not till the end at IE? Chrome is OK!!  Where exactly I am wrong?

<input type="button" class='butons_hello_divekle' name="yourBtn" id="yourBtn" onclick="getFile()"/>

function getFile(){ 

    $("#upimgfile").click(); 

}

function sub(obj){

    var file = obj.value;

    var fileName = file.split("\\");

    alert(fileName.length);

    alert(fileName);

    alert(fileName[fileName.length-1]);

//it works till this line at IE

    $("#yourBtn").html(fileName[fileName.length-1]);

    alert("fn: "+fileName[1]);

    $("#imgekleform").submit();

    alert("submited: "+obj.value);

    event.preventDefault();

}

<form action="" method="POST" enctype="multipart/form-data" id="imgekleform" name="imgekleform">

<div style='height: 0px;width: 0px; overflow:hidden;'>

<input id="upimgfile" name="upimgfile" type="file" value="upload" onchange="sub(this)"/></div>

</form>