javascript create problem

[UD IA]

var n=''
str=document.getElementById("attach").value
//temp = str.split('\\');
m=str.lastIndexOf("\\")
for(i=m+1;i<str.length;i++)>
{
n = n + str[i];
// alert
}
alert
document.getElementById("name").innerHTML = n;
alert(document.getElementById("name").innerHTML);

this code is run very well in mozilla firefox while not work in ie given undefine why?

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