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annotate ajax.js @ 730:c71948773f03

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Add preliminary preview zoom function.
author Matti Hamalainen <ccr@tnsp.org>
date Tue, 18 Nov 2014 23:37:46 +0200
parents 8b1abca34033
children c7b4139eb217
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 function jsCloseMessageBox(callback, cb_data)
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2 {
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3 var nitem = document.getElementById("messageBox");
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4 if (nitem && nitem.style.display != "none")
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5 {
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6 nitem.style.display = "none";
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7
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8 if (callback && typeof(callback) === "function")
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9 callback(cb_data);
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10 }
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11 }
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12
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13
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14 function jsMessageBox(msg)
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15 {
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16 var nitem = document.getElementById("messageBox");
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17 if (nitem)
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18 {
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19 nitem.innerHTML = "<div class='messageBoxInner'>"+ msg +
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20 "<div class='messageBoxControls'>"+
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21 "<input id='msgBoxConfirmClose' type='button' value=' OK '>"+
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22 "</div></div>";
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23
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24 var elem = document.getElementById("msgBoxConfirmClose");
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25 elem.onclick = function () { jsCloseMessageBox(0, 0); }
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26
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27 nitem.style.display = "block";
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28 }
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29 }
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30
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31
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32 function jsConfirmBox(msg, cb_ok, cb_cancel, cb_data)
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33 {
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34 var nitem = document.getElementById("messageBox");
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35 if (nitem)
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36 {
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37 nitem.innerHTML = "<div class='messageBoxInner'><h1>Confirmation</h1><p>"+ msg +"</p>"+
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38 "<div class='messageBoxControls'>"+
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39 "<input id='msgBoxConfirmCancel' type='button' value=' Cancel '>"+
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40 "<input id='msgBoxConfirmOK' type='button' value=' OK '>"+
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41 "</div></div>";
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42
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43 var elem = document.getElementById("msgBoxConfirmCancel");
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44 elem.onclick = function () { jsCloseMessageBox(cb_cancel, cb_data); }
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45
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46 elem = document.getElementById("msgBoxConfirmOK");
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47 elem.onclick = function () { jsCloseMessageBox(cb_ok, cb_data); }
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48
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49 nitem.style.display = "block";
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50 }
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51 }
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52
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53
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54 function statusMsg(msg)
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55 {
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56 var nitem = document.getElementById("nstatus");
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57 if (nitem) nstatus.innerHTML = msg;
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58 }
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59
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60
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61 function strtrim(str)
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62 {
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63 if (!str || str == null)
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64 return "";
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65 return str.replace(/^\s+|\s+$/g,'')
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66 }
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67
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68
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69 function strencode(str)
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70 {
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71 return encodeURIComponent(str);
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72 }
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73
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74
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75 function jsCreateXMLRequest()
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76 {
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77 var req;
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78 if (window.XMLHttpRequest)
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79 {
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80 // Modern browsers
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81 req = new XMLHttpRequest();
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82 }
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83 else
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84 {
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85 // Old IE versions
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86 req = new ActiveXObject("Microsoft.XMLHTTP");
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87 }
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88 return req;
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89 }
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90
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91
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92 //
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93 // Function for creating AJAX POST request arguments list based
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94 // on fields and giving them specified types. Also basic check
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95 // for validity can be performed (e.g. field empty or not)
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96 //
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97 var lastPostArgs = Object();
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98 function jsMakePostArgs(fields, fprefix, fsuffix, nofail)
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99 {
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100 var res = [];
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101 lastPostArgs = Object();
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102
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103 for (var id in fields)
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104 {
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105 var elname = fprefix + id + fsuffix;
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106 switch (fields[id])
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107 {
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108 case 4:
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109 elname += "Sel";
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110 break;
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111 }
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112
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113 var elem = document.getElementById(elname);
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114 if (!elem && !nofail)
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115 {
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116 jsMessageBox("No such DOM element '"+ elname +"'.");
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117 return "";
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118 }
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119
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120 if (elem)
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121 {
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122 switch (fields[id])
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123 {
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124 case 1:
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125 var vstr = strtrim(elem.value);
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126 res.push(id+"="+strencode(vstr));
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127 lastPostArgs[id] = vstr;
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128 break;
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129
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130 case 2:
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131 var vint = parseInt(strtrim(elem.value));
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132 res.push(id+"="+vint);
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133 lastPostArgs[id] = vint;
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134 break;
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135
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136 case 3:
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137 res.push(id+"="+(elem.checked ? "1" : "0"));
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138 lastPostArgs[id] = elem.checked;
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139 break;
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140
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141 case 4:
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142 var vval = (elem.selectedIndex != -1) ? elem.options[elem.selectedIndex].value : -1;
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143 res.push(id+"="+vval);
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144 lastPostArgs[id] = vval;
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145 break;
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146
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147 default:
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148 jsMessageBox("Unsupported field type in "+ elname);
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149 return "";
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150 }
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151 }
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152 }
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153 return res.join("&");
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154 }
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155
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156
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157 function jsGetValue(elname, eltype)
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158 {
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159 var elem = document.getElementById(elname);
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160 if (!elem)
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161 {
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162 jsMessageBox("No such DOM element '"+ elname +"'.");
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163 return "";
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164 }
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165
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166 switch (eltype)
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167 {
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168 case 1:
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169 var vstr = strtrim(elem.value);
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170 return strencode(vstr);
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171
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172 case 2:
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173 var vint = parseInt(strtrim(elem.value));
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174 return vint;
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175
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176 case 3:
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177 return elem.checked ? "1" : "0";
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178
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179 case 4:
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180 if (elem.selectedIndex != -1)
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181 return elem.options[elem.selectedIndex].value;
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182 else
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183 return null;
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184
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185 default:
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186 jsMessageBox("Unsupported field type in "+ elname);
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187 return "";
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188 }
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189 }
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190
730
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191
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192 function jsShowPreviewImage(file)
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193 {
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194 var nitem = document.getElementById("messageBox");
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195 if (nitem)
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196 {
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197 nitem.innerHTML = "<img src='"+file+"' alt='"+file+"' /><br />"+
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198 "<div class='messageBoxControls'>"+
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199 "<input id='messageBoxClose' type='button' value=' Close '>"+
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200 "</div>";
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201
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202 var elem = document.getElementById("messageBoxClose");
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203 elem.onclick = function () { jsCloseMessageBox(0, 0); }
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204
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205 nitem.style.display = "block";
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206 }
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207 }