function chk_contact()
{
	var x = document.contact;
	if( x.name.value == "" )
	{
		alert("Enter Name");
		x.name.focus();
		return false;
	}
	if( x.email.value == "" )
	{
		alert("Enter Email");
		x.email.focus();
		return false;
	}
	
	if(!isMail(x.email.value))
	{
		alert("Please input a valid email address!");
		x.email.focus();
		return false;
	}

}

function isMail(value)
{

   var testresults;
	  
   var str = value;
	  
   var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
	 
   if (filter.test(str))
      testresults=true;
   else
      testresults=false
	 
   return testresults;

}