function isEmail(s)
{   
  if (s=="") return false;
  if(s.indexOf(" ")>0) return false;
  var i = 1;
  var sLength = s.length;
  if (s.indexOf(".")==sLength) return false;
  if (s.indexOf(".")<=0) return false;
  if (s.indexOf("@")!=s.lastIndexOf("@")) return false;

  while ((i < sLength) && (s.charAt(i) != "@"))
  { i++
  }

  if ((i >= sLength) || (s.charAt(i) != "@")) return false;
  else i += 2;

  while ((i < sLength) && (s.charAt(i) != "."))
  {
	  i++
  }

  if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
   var str="0123456789abcdefghikjlmnopqrstuvwxyz-@._"; 
   for(var j=0;j<s.length;j++)
	if(str.indexOf(s.charAt(j))==-1)
		return false;
   return true;
}
function checkdt(s)
{	
	var str="0123456789";
	if(s.length!=7 && s.length!=10 && s.length!=6 && s.length!=8 && s.length!=9) return false
	for(var i=0;i<s.length;i++)
	{
		if(str.indexOf(s.charAt(i))==-1)	return false;
	}
	return true;	
}
//Check Number
function isnumber(s)
{
	var str="0123456789";
	for(var i=0;i<s.length;i++)
	{
		if(str.indexOf(s.charAt(i))==-1)	return false;
	}
	return true;
}
/**/
function addToFavorites() { 
	var urlAddress = "http://www.ptcvn.com"; 
	var pageName = "Phuc Thang Fine Furniture"; 
	if (window.external) { 
		window.external.AddFavorite(urlAddress,pageName);
	} else { 
		alert("Sorry! Your browser doesn't support this function."); 
	} 
} 
function showhide(thecell)
	{	
		if(theoldcell == thecell){
			eval('document.all.'+thecell).style.display = 'none'
			eval('document.all.'+theoldcell).style.display = 'none'
			theoldcell = ""
		}
		else
		{
			if(theoldcell != thecell)
			{
				if(theoldcell != "")
				eval('document.all.'+theoldcell).style.display = 'none'
				eval('document.all.'+thecell).style.display = ''
				theoldcell = thecell
			}
		}
}
	
/**/
function mOvr(src) {
		if (!src.contains(event.fromElement)) {
		src.style.cursor = 'hand';
		}
	}
	function mOut(src) {
		if (!src.contains(event.toElement)) {
		src.style.cursor = 'default';
		}
	}
	function mClk(src) {
		if(event.srcElement.tagName=='TD'){
		src.children.tags('A')[0].click();
		}
	}