function CheckAll(x)
{

if (ISBLANK(x.fieldnm_2.value)) 
 {  
      alert("Please define value for E-mail field !!");
         return false;
    }

 
  return true;
}

/// email check

function checkemail(myemail)
{
var str=myemail;
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)
}

/// to check that perticular value is EMPTY OR NOT
function ISBLANK(xx)
{ 
        var cc=0,tt;
  for(tt=0; tt<xx.length; tt++)
  {
       if (xx.charAt(tt)==' ')
    {
     cc=cc+1; // count blank character
    }
  }
  if (cc==xx.length)
  {
   return true;  //// means it is BLANK
  }
      return false; //// means it is NOT BLANK
}

function is_radio_button_selected(fieldnm)
{
// set var radio_choice to false
var radio_choice = false;

// Loop from zero to the one minus the number of radio button selections
for (counter = 0; counter < fieldnm.length; counter++)
{
// If a radio button has been selected it will return true
// (If not it will return false)
if (fieldnm[counter].checked)
radio_choice = true; 
}

if (!radio_choice)
{
return (false); /// means not selected
}
return (true); /// means selected
}