function onEnter(element) { //enter the textboxes
  if (element.value == "enter "+ element.id)
  {
  	element.value = "";
  }
}
function onLeave(element) { //leave the textboxes
  if (element.value == "")
  {
  	element.value = "enter " + element.id;
  }
}

function submitForm() {
	document.offers_form.submit();
}

function changeTextfields() {
	var checkbox = document.getElementById('oneSize');
      var price1 = document.getElementById('price1');
      var price2 = document.getElementById('price2');
      var price3 = document.getElementById('price3');
      var price4 = document.getElementById('price4');
      
	if (checkbox.checked)
      {
      	price1.disabled = false;
            price2.disabled = false;
            price3.disabled = false;
            price4.disabled = false;
            price5.disabled = false
      	
      }
      else 
      {
      	price1.disabled = true;
            price2.disabled = true;
            price3.disabled = true;
            price4.disabled = true;
            price5.disabled = true;
      }

}