function insertTags(tag1, tag2) {
    var txta = document.getElementsByName('text')[0];
    txta.focus();
    if (typeof document.selection != 'undefined') {
        var range  = document.selection.createRange();
        var sel    = range.text;
        range.text = tag2 
            ? '[' + tag1 + ']' + sel + '[/' + tag2 + ']'
            : ' ' + tag1 + ' ';
        range = document.selection.createRange();
        if (tag2 && !sel.length) { range.move('character', -tag2.length - 3); }
        else if (tag2) {
            range.move('character', tag1.length + 2 + sel.length + tag2.length + 3);
        }
        range.select();
    }
    else if (typeof txta.selectionStart != 'undefined') {
        var scroll = txta.scrollTop;
        var start  = txta.selectionStart;
        var end    = txta.selectionEnd;
        var before = txta.value.substring(0, start);
        var sel    = txta.value.substring(start, end);
        var after  = txta.value.substring(end, txta.textLength);
        txta.value = tag2 
            ? before + '[' + tag1 + ']' + sel + '[/' + tag2 + ']' + after
            : before + ' ' + tag1 + ' ' + after;
        var caret = sel.length == 0
            ? start + tag1.length + 2
            : start + tag1.length + 2 + sel.length + tag2.length + 3;
        txta.selectionStart = caret;
        txta.selectionEnd   = caret;
        txta.scrollTop      = scroll;
    }
}
  function disp_country($region)
	{		
		if($region == 'Asia' || $region == 'Southeast Asia')
		{
			document.getElementById("country").style.display = 'inline';
			//$("#country").show();
		}
		else
		{
			document.getElementById("country").style.display = 'none';
			//$("#country").hide();
		}
	}
  function validate(form_id,email) {
	   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
	   var address = document.forms[form_id].elements[email].value;
	   if(reg.test(address) == false) {
	      //alert('Invalid Email Address');
	      return false;
	   }
	   else
	   {
		   return true;
	   }
	}
  
  function change_value()
  {
	  document.getElementById("value_to_change").style.display = 'block';
  }