//writing farsi code
// call example: onkeypress="keyenter(this,event)"
function keyenter(field,e)
{
	var key;
	if (window.event)
	   key = window.event.keyCode;
	
	if (key>31)
	  if (key<128)
	  {
		if (window.event)
		  window.event.keyCode=' !"#$%،گ)(×+و-./0123456789:ك,=.؟@ِذ}ىُیلا÷ـ،/’د×؛َءٍف‘{ًْإ~جژچ^_پشذزیثبلاهتنمئدخحضقسفعرصطغظ<|>ّ'.charCodeAt(key-32);

	  }
}


//validation function for isNumeric
function checkNumber(contents) 
{
    if (((contents.value / contents.value) != 1) && (contents.value != 0)) 
    {
        contents.focus();
        alert('لطفاٌ فقط عدد تایپ کنید');
    }
}