function URLEncode (clearString) {  
  var output = '';  
  var x = 0;  
  clearString = clearString.toString();  
  var regex = /(^[a-zA-Z0-9_.]*)/;  
  while (x < clearString.length) {  
    var match = regex.exec(clearString.substr(x));  
    if (match != null && match.length > 1 && match[1] != '') {  
        output += match[1];  
      x += match[1].length;  
    } else {  
      if (clearString[x] == ' ')  
        output += '+';  
      else {  
        var charCode = clearString.charCodeAt(x);  
        var hexVal = charCode.toString(16);  
        output += '%' + ( hexVal.length < 2 ? '0' : '' ) + hexVal.toUpperCase();  
      }  
      x++;  
    }  
  }  
  return output;  
}  

function SubmitOnEnter(myfield, e)  
{  
    var keycode;  
    if (window.event)  
        keycode = window.event.keyCode;  
    else if (e)  
        keycode = e.which;  
    else  
        return true;  
    if (keycode == 13)  
    {  
        SearchSite();  
        return false;  
    }  
    else  
        return true;  
}  
function SearchSite()  
{  
    document.location.href='gsearch.aspx?' + 
        'cx=' + URLEncode(document.getElementById('cx').value) + 
        '&cof=' + URLEncode(document.getElementById('cof').value) + 
        '&ie=UTF-8&q=' + URLEncode(document.getElementById('q').value) + '&sa=Search';  
}