1 | (function() |
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2 | { |
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3 | var _element = null; |
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4 | var _elementA = null; |
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5 | var _elementB = null; |
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6 | var _parent = null; |
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7 | |
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8 | function _configEvent(pObj, pEvent, pHandler) |
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9 | { |
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10 | try |
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11 | { |
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12 | if (typeof pObj == 'object') |
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13 | { |
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14 | if (pEvent.substring(0, 2) == 'on') |
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15 | pEvent = pEvent.substring(2, pEvent.length); |
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16 | |
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17 | if (arguments.length == 3) |
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18 | { |
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19 | if (pObj.addEventListener) |
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20 | pObj.addEventListener(pEvent, pHandler, false); |
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21 | else |
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22 | if (pObj.attachEvent) |
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23 | pObj.attachEvent('on' + pEvent, pHandler); |
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24 | } |
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25 | else |
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26 | { |
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27 | if (arguments.length == 4) |
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28 | { |
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29 | if (pObj.removeEventListener && pObj.removeEventListener != 'undefined') |
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30 | pObj.removeEventListener(pEvent, pHandler, false); |
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31 | else |
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32 | if (pObj.detachEvent) |
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33 | pObj.detachEvent('on' + pEvent, pHandler); |
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34 | } |
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35 | } |
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36 | } |
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37 | } |
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38 | catch(e){} |
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39 | } |
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40 | |
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41 | function _drag(e) |
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42 | { |
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43 | if (typeof e.preventDefault != 'undefined') |
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44 | e.preventDefault(); |
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45 | else |
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46 | e.onselectstart = new Function("return false;"); |
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47 | |
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48 | _element = ( e.target ) ? e.target : e.srcElement; |
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49 | |
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50 | if ( _element ) |
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51 | { |
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52 | _configEvent(_element, 'onmousemove', _mouseMove); |
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53 | _configEvent(top.document, 'onmousemove', _mouseMove); |
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54 | |
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55 | _configEvent(_element, 'onmouseup', _mouseUp); |
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56 | _configEvent(top.document, 'onmouseup', _mouseUp); |
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57 | } |
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58 | } |
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59 | |
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60 | function _elementShadow( pId ) |
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61 | { |
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62 | if( _elementA ) |
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63 | { |
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64 | var _elShadow = document.createElement("div"); |
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65 | _elShadow.id = _elementA.id + "__Shadow"; |
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66 | _elShadow.setAttribute("onselectstart" , "return false"); |
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67 | _elShadow.style.width = _elementA.style.width; |
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68 | _elShadow.style.height = _elementA.style.height; |
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69 | _elShadow.style.top = _elementA.style.top; |
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70 | _elShadow.style.left = _elementA.style.left; |
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71 | _elShadow.style.zIndex = _elementA.style.zIndex; |
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72 | _elShadow.className = "x-shadow_Div"; |
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73 | |
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74 | return _elShadow; |
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75 | } |
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76 | } |
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77 | |
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78 | function _load() |
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79 | { |
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80 | if( arguments.length > 0 ) |
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81 | { |
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82 | var pId = arguments[0]; |
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83 | |
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84 | _configEvent(document.getElementById( pId + "__draggable"), 'onmousedown', _mouseDownShadow); |
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85 | } |
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86 | } |
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87 | |
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88 | function _getMouseOffset(e, el) |
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89 | { |
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90 | var docPos = _getPosition(el); |
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91 | var mousePos = _mouseCoords(e); |
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92 | return { |
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93 | 'x' : mousePos.x - docPos.x, |
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94 | 'y' : mousePos.y - docPos.y |
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95 | }; |
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96 | } |
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97 | |
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98 | function _getPosition(_pObject) |
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99 | { |
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100 | var left = 0; |
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101 | var top = 0; |
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102 | |
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103 | while ( _pObject.offsetParent ) |
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104 | { |
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105 | left += _pObject.offsetLeft; |
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106 | top += _pObject.offsetTop; |
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107 | _pObject = _pObject.offsetParent; |
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108 | } |
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109 | |
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110 | left += _pObject.offsetLeft; |
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111 | top += _pObject.offsetTop; |
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112 | |
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113 | return { |
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114 | 'x' : left, |
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115 | 'y' : top |
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116 | }; |
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117 | } |
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118 | |
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119 | function _mouseCoords(ev) |
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120 | { |
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121 | var CoordX = ""; |
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122 | var CoordY = ""; |
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123 | |
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124 | if ( ev.pageX || ev.pageY ) |
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125 | return { |
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126 | 'x' : ev.pageX, |
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127 | 'y' : ev.pageY |
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128 | }; |
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129 | |
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130 | CoordX = ev.clientX + document.body.scrollLeft - document.body.clientLeft; |
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131 | CoordY = ev.clientY + document.body.scrollTop - document.body.clientTop; |
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132 | |
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133 | return { |
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134 | 'x' : CoordX, |
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135 | 'y' : CoordY |
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136 | }; |
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137 | } |
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138 | |
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139 | function _mouseMove(e) |
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140 | { |
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141 | if ( _element ) |
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142 | { |
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143 | if ( _element.mouseOffset == null ) |
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144 | _element.mouseOffset = _getMouseOffset(e, _element); |
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145 | |
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146 | var mousePos = _mouseCoords(e); |
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147 | |
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148 | var x = mousePos.x - _element.mouseOffset.x; |
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149 | var y = mousePos.y - _element.mouseOffset.y; |
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150 | _element.style.left = (( x < 0 ) ? 0 : x) + 'px'; |
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151 | _element.style.top = (( y < 0 ) ? 0 : y) + 'px'; |
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152 | } |
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153 | } |
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154 | |
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155 | function _mouseUp() |
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156 | { |
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157 | if ( _element ) |
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158 | { |
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159 | _mouseUpShadow(); |
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160 | |
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161 | _configEvent(_element, 'onmousemove', _mouseMove, 'remove'); |
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162 | _configEvent(top.document, 'onmousemove', _mouseMove, 'remove'); |
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163 | |
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164 | _configEvent(_element, 'onmouseup', _mouseUp, 'remove'); |
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165 | _configEvent(top.document, 'onmouseup', _mouseUp, 'remove'); |
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166 | |
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167 | _element.mouseOffset = null; |
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168 | _element = null; |
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169 | } |
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170 | } |
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171 | |
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172 | function _mouseDownShadow(e) |
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173 | { |
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174 | try |
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175 | { |
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176 | if( arguments.length > 0 ) |
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177 | { |
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178 | var _el = ( e.target ) ? e.target : e.srcElement; |
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179 | var _id = (_el.id.substring(0, _el.id.indexOf("__draggable"))); |
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180 | |
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181 | _elementA = document.getElementById( _id + "__parent"); |
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182 | _elementB = _elementShadow( _id + "__parent"); |
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183 | |
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184 | _elementA.style.left = '-1500px'; |
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185 | _parent = _elementA.parentNode; |
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186 | |
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187 | var _B = _parent.appendChild(_elementB); |
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188 | |
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189 | _configEvent( _elementB, 'onmouseup', _mouseUpShadow); |
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190 | _configEvent( _elementB, 'onmousemove', _drag); |
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191 | } |
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192 | |
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193 | }catch(e){} |
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194 | } |
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195 | |
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196 | function _mouseUpShadow() |
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197 | { |
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198 | try |
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199 | { |
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200 | _elementA.style.top = _elementB.style.top; |
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201 | _elementA.style.left = _elementB.style.left; |
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202 | |
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203 | var _B = _parent.removeChild(_elementB); |
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204 | |
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205 | _elementA = null; |
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206 | _elementB = null; |
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207 | _element = null; |
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208 | } |
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209 | catch(e){} |
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210 | } |
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211 | |
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212 | function _drag_drop(){} |
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213 | |
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214 | _drag_drop.prototype.set = _load; |
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215 | window._drag_drop = _drag_drop; |
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216 | |
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217 | })(); |
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