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1 // -*-mode: C++; style: K&R; c-basic-offset: 4 ; -*- */
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2 //
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3 // Simple collection of Javascript for Ajax form submission.
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4 //
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5
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6
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7
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8
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9 //
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10 // Get an XMLHTTPRequest object.
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11 //
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12 function getXMLHTTPRequest()
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13 {
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14 req = false;
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15 if(window.XMLHttpRequest)
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16 {
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17 try
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18 {
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19 req = new XMLHttpRequest();
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20 }
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21 catch(e)
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22 {
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23 req = false;
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24 }
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25 }
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26 else if(window.ActiveXObject)
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27 {
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28 try
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29 {
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30 req = new ActiveXObject("Msxml2.XMLHTTP");
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31 }
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32 catch(e)
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33 {
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34 try
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35 {
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36 req = new ActiveXObject("Microsoft.XMLHTTP");
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37 }
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38 catch(e)
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39 {
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40 req = false;
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41 }
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42 }
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43 }
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44
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45 return( req );
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46 }
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47
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48
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49 //
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50 // Submit the comment.
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51 //
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52 function submitComment()
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53 {
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54 showProgress();
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55
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56 var xhr = getXMLHTTPRequest();
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57 if(! xhr )
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58 {
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59 hideProgress();
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60 return;
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61 }
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62
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63 xhr.onreadystatechange = function()
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64 {
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65 if(xhr.readyState == 4)
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66 {
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67 if(xhr.status == 200)
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68 {
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69 var o = document.getElementById( "output" );
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70 o.innerHTML = xhr.responseText;
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71 }
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72 else
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73 {
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74 var o = document.getElementById( "output" );
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75 o.innerHTML = "Failed HTTP code " + xhr.status + " " + xhr.responseText;
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76 }
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77
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78 hideProgress();
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79 }
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80 };
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81
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82 data = 'ajax=1';
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83 data = data + '&id=' + escape(document.forms[0].id.value );
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84 data = data + '&captcha=' + escape( document.forms[0].captcha.value );
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85 data = data + '&id=' + escape(document.forms[0].id.value );
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86 data = data + '&captcha=' + escape( document.forms[0].captcha.value );
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87 data = data + '&name=' + escape( document.forms[0].name.value );
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88 data = data + '&mail=' + escape( document.forms[0].mail.value );
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89 data = data + '&body=' + escape( document.forms[0].body.value );
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90
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91 //
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92 // Make the request
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93 //
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94 xhr.open("POST", "/cgi-bin/comments.cgi", true);
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95 xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
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96 xhr.send(data);
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97 }
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98
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99
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100 //
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101 // Show our progress marker.
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102 //
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103 function showProgress()
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104 {
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105 var i = document.getElementById( "progress" );
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106 if ( i )
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107 {
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108 i.style.display = 'block';
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109 }
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110 }
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111
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112 //
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113 // Hide our progress marker.
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114 //
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115 function hideProgress()
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116 {
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117 var i = document.getElementById( "progress" );
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118 if ( i )
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119 {
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120 i.style.display = 'none';
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121 }
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122 }
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