function checkjoinusform()
  {
   if (joinusform.fullname.value=="")
   {
   alert(" Name cannot be blank .")
   joinusform.fullname.focus()
   }
   else if (!isAlpha(joinusform.fullname.value))
   {
   alert(" Enter your name correctly .")
   joinusform.fullname.focus()
   joinusform.fullname.select()
   }
   else if (joinusform.age.value=="none")
   {
   alert(" Please select your age .")
   joinusform.age.focus()
   }
   else if (!isAlpha(joinusform.city.value))
   {
   alert(" Enter your City correctly .")
   joinusform.city.focus()
   joinusform.city.select()
   }
   else if (joinusform.country.value=="none")
   {
   alert(" Please select your country .")
   joinusform.country.focus()
   }
   else if (!validEmail(joinusform.eid.value))
   {
   alert(" Enter your Email ID correctly .")
   joinusform.eid.focus()
   joinusform.eid.select()
   }
   else if (joinusform.contactno.value=="")
   {
   alert(" Please enter your Contact No. \n Don't leave it blank.")
   joinusform.contactno.focus()
   }
   else if (!isNum(joinusform.contactno.value))
   {
   alert(" Enter your Contact No. correctly .")
   joinusform.contactno.focus()
   joinusform.contactno.select()
   }
   else
   {
   joinusform.action="joinus_submit.php"
   }
  }

function isAlpha(passedVal)
  {
  for(i=0;i<passedVal.length;i++)
  {
  if ((passedVal.charAt(i)<"a" || passedVal.charAt(i)>"z") && (passedVal.charAt(i)<"A" || passedVal.charAt(i)>"Z") && passedVal.charAt(i)!=" " && passedVal.charAt(i)!=".")
  return false
  }
  return true
  }
  
  function isNum(val)
  {
		for(i=0;i<val.length;i++)
		{
			if ((val.charAt(i)<"0" || val.charAt(i)>"9") && (val.charAt(i)!="-") && (val.charAt(i)!="+"))
			return false
		}
		return true
  }