function change(src, style)
{
   src.className = style;
}
function buttshow()
{
   if(buttonmode == 0)
      document.getElementById("but_prev").style.display = 'none'
   if(buttonmode == 2)
   {
      document.getElementById("but_next").value = 'Complete the Survey'
      document.getElementById("but_next").style.width = "200px"
   }
   if(buttonmode == 5)
   {
      document.getElementById("but_susp").style.display = 'none'
      document.getElementById("but_prev").style.display = 'none'
      document.getElementById("but_next").value = 'Close The Survey' 
   }
   if(buttonmode == 6) //PMR style removal of previous button middle of survey
   {
      document.getElementById("but_prev").style.display = 'none'
      document.getElementById("but_next").style.marginLeft='150px'
   }
   if(buttonmode == 7)
   {
      document.getElementById("but_next").style.visibility = 'hidden'
   }
}
var buttonmode = 1;