function sendvars(){	
  if (document.getElementById('name').value=='')   {
	  alert("Required field : Name")
	  document.getElementById('name').focus();	  
     return false;
  } 
  if (document.getElementById('email').value=='')   { 
	  alert("Required field : Email")  
	  document.getElementById('email').focus();	  
     return false;
  } 
  if (document.getElementById('phone').value=='')   { 
	  alert("Required field : Phone")
	  document.getElementById('phone').focus();
     return false;
  }
    if (document.getElementById('zip').value=='')   { 
	  alert("Required field : Zip") 
	  document.getElementById('zip').focus();	  
     return false;
  } 
}

function isNumberKey(evt)
      {
         var charCode = (evt.which) ? evt.which : event.keyCode
         if (charCode > 31 && (charCode < 48 || charCode > 57))
            return false;

         return true;
      }


function txtBoxFormat(objForm, strField, sMask, evtKeyPress) {

var i, nCount, sValue, fldLen, mskLen,bolMask, sCod, nTecla;

if(document.all) { // Internet Explorer
    nTecla = evtKeyPress.keyCode;
} else if(document.layers) { // Nestcape
    nTecla = evtKeyPress.which;
} else {
    nTecla = evtKeyPress.which;
    if (nTecla == 8) {
        return true;
    }
}

sValue = document.getElementById(strField).value;
// Limpa todos os caracteres de formatacaoo que
// ja estiverem no campo.
sValue = sValue.toString().replace( "-", "" );
sValue = sValue.toString().replace( "-", "" );
sValue = sValue.toString().replace( ".", "" );
sValue = sValue.toString().replace( ".", "" );
sValue = sValue.toString().replace( "/", "" );
sValue = sValue.toString().replace( "/", "" );
sValue = sValue.toString().replace( "(", "" );
sValue = sValue.toString().replace( "(", "" );
sValue = sValue.toString().replace( ")", "" );
sValue = sValue.toString().replace( ")", "" );
sValue = sValue.toString().replace( " ", "" );
sValue = sValue.toString().replace( " ", "" );
fldLen = sValue.length;
mskLen = sMask.length;

i = 0;
nCount = 0;
sCod = "";
mskLen = fldLen;

while (i <= mskLen) {
bolMask = ((sMask.charAt(i) == "-") || (sMask.charAt(i) == ":") || (sMask.charAt(i) == ".") || (sMask.charAt(i) == "/"))
bolMask = bolMask || ((sMask.charAt(i) == "(") || (sMask.charAt(i) == ")") || (sMask.charAt(i) == " "))

if (bolMask) {
    sCod += sMask.charAt(i);
    mskLen++;
} else {
    sCod += sValue.charAt(nCount);
    nCount++;
}
i++;
}

document.getElementById(strField).value = sCod;
if (nTecla != 8) { // backspace
    if (sMask.charAt(i-1) == "9") { // apenas numeros...
    return ((nTecla > 47) && (nTecla < 58)); } // numeros de 0 a 9
else { // qualquer caracter...
    return true;
}
} else {
    return true;
}
}