/* function isEmpty(elem, helperMsg){
if(elem.value.length == 0){
alert(helperMsg);
elem.focus(); // set the focus to this input
return true;
}
return false;
} */

function checknum(elem)
{
   var numericExpression = /^[0-9]+$/;
   var num = elem.name;
   var err = "Please enter a Valid ";
   if(num == "elevnum")
   err += "elevator";
   else if(num == "floor")
   err += "floor";
   else if(num == "door")
   err += "door";
   else if(num == "tel")
   err+= "telephone";
   else if(num == "ch")
   err+="cabinet height";
   else if(num == "cw")
   err+="cabinet width";
   else if(num == "weight")
   err+="weight";
   err += " number";
   
   if ( elem.value==null || elem.value=="null" || !(elem.value.match(numericExpression)) )
   {
      alert(err);
      elem.focus();
      return false;
   }
   else return true;

}
function check(form)
{
   var name = document.getElementById('name');
   var tel = document.getElementById('phonenum');
   var mail = document.getElementById('email');
//if name.
   var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
   if(name.value == "" )
   {
      var str = "Please enter a Name";
      alert(str);
      name.focus();
      return false;
   }
   else if( ! mail.value.match(emailExp))
   {
      alert("Please enter a Valid Mail");
      mail.focus();
      return false;
   }
   else if((!checknum(tel)))
   {
   return false;
   }
   else
   return true;


}