var flag
flag=0;
function change(obj){
if (flag==0)
flag=1
else
flag=0;
obj.focus();
}

function convert(myfield,e)
{
if (flag==0)
{
var key;
if (window.event)
   key = window.event.keyCode;
else if (e) 
   key = e.which;
if (key>31)
if (key<128)
{
if (window.event) {
    window.event.keyCode=' !"#$%،گ)(×+و-./0123456789:ك,=.؟@ِذ}ىُىلآ÷ـ،/’د×؛َءٍف‘{ًْإ~جژچ^_پشذزيثبلاهتنمئدخحضقسفعرصطغظ<|>ّ'.charCodeAt(key-32); }
else if (e) 
   e.which=' !"#$%،گ)(×+و-./0123456789:ك,=.؟@ِذ}ىُىلآ÷ـ،/’د×؛َءٍف‘{ًْإ~جژچ^_پشذزيثبلاهتنمئدخحضقسفعرصطغظ<|>ّ'.charCodeAt(key-32);


   		}
	return true;
	}
}