/* 
 --- Tristate Checkbox ---
v 0.9.2 19th Dec 2008
By Shams Mahmood
http://shamsmi.blogspot.com 
*/
var STATE_NONE=0;var STATE_SOME=2;var STATE_ALL=1;var UNCHECKED_NORM="UNCHECKED_NORM";var UNCHECKED_HILI="UNCHECKED_HILI";var INTERMEDIATE_NORM="INTERMEDIATE_NORM";var INTERMEDIATE_HILI="INTERMEDIATE_HILI";var CHECKED_NORM="CHECKED_NORM";var CHECKED_HILI="CHECKED_HILI";var DEFAULT_CONFIG={UNCHECKED_NORM:"http://lh6.ggpht.com/_c_AszxFWLLs/SUrdffHaeiI/AAAAAAAACkw/uXPxlSq7ZME/s144/unchecked.gif",UNCHECKED_HILI:"http://lh4.ggpht.com/_c_AszxFWLLs/SUrdfZ1ojEI/AAAAAAAACk4/5YVi4rip30A/s144/unchecked_highlighted.gif",INTERMEDIATE_NORM:"http://lh5.ggpht.com/_c_AszxFWLLs/SUrdbwoLc0I/AAAAAAAACkg/SvmbPidI2-o/s144/intermediate.gif",INTERMEDIATE_HILI:"http://lh5.ggpht.com/_c_AszxFWLLs/SUrdbwtXDOI/AAAAAAAACko/82v692p5tno/s144/intermediate_highlighted.gif",CHECKED_NORM:"http://lh3.ggpht.com/_c_AszxFWLLs/SUrdbiLuQCI/AAAAAAAACkQ/faUYorb0WT8/s144/checked.gif",CHECKED_HILI:"http://lh4.ggpht.com/_c_AszxFWLLs/SUrdb6se_WI/AAAAAAAACkY/Khw5XhX0T5Y/s144/checked_highlighted.gif"};function getNextStateFromValue(A){if(A==STATE_SOME){return STATE_NONE}if(A==STATE_ALL){return STATE_SOME}return STATE_ALL}function getStateFromValue(B,A){if(B==STATE_SOME){return(!A)?INTERMEDIATE_NORM:INTERMEDIATE_HILI}if(B==STATE_ALL){return(!A)?CHECKED_NORM:CHECKED_HILI}return(!A)?UNCHECKED_NORM:UNCHECKED_HILI}function getFieldAndContainerIds(D){var E=D.substring(0,D.length-".Img".length);var C=document.getElementById(E+".Field").value;var A=document.getElementById(E+".Container");var B="";if(A){B=A.value}return[C,B]}function getAllCheckboxesInContainer(C){if(C==""){return[]}var B=document.getElementById(C);var G=B.getElementsByTagName("input");var F=new Array();var E=0;for(var A=0;A<G.length;A++){var D=G[A];if(D.type=="checkbox"){F[E++]=D}}return F}function selectOrUnselectBoxes(C,B){for(var A in C){C[A].checked=B}}function areAllBoxesInGivenCheckedState(C,D){var B=true;for(var A=0;A<C.length;A++){if(C[A].checked!=D){B=false;break}}return B}function replaceImage(A,C){var B=document.getElementById(A);if(B.src!=C){B.src=C}}function mouseOverOutOfImage(C,A){var E=getFieldAndContainerIds(C);var B=document.getElementById(E[0]);var D=getStateFromValue(B.value,A);return DEFAULT_CONFIG[D]}function onMouseOverImage(A){return function(){var B=mouseOverOutOfImage(A,true);replaceImage(A,B)}}function onMouseOutImage(A){return function(){var B=mouseOverOutOfImage(A,false);replaceImage(A,B)}}function onTristateImageClick(A,B){return function(){var F=getFieldAndContainerIds(A);var E=document.getElementById(F[0]);var D=getNextStateFromValue(E.value);if(!B&&D==STATE_SOME){D=getNextStateFromValue(D)}E.value=D;if(F[1]!=""){var C=getAllCheckboxesInContainer(F[1]);selectOrUnselectBoxes(C,D==STATE_ALL)}var G=mouseOverOutOfImage(A,true);replaceImage(A,G)}}function onCheckboxClick(A,B){return function(){var E=getFieldAndContainerIds(A);var C=getAllCheckboxesInContainer(E[1]);var D=document.getElementById(E[0]);updateStateAndImage(C,D,A)}}function updateStateAndImage(B,D,C){if(B.length>0){var A=areAllBoxesInGivenCheckedState(B,true);var E=areAllBoxesInGivenCheckedState(B,false);if(A){D.value=STATE_ALL}else{if(E){D.value=STATE_NONE}else{D.value=STATE_SOME}}}var F=mouseOverOutOfImage(C,false);replaceImage(C,F)}function createHiddenStateField(C,A){var B=document.createElement("input");B.id=A;B.type="hidden";B.value=STATE_NONE;C.appendChild(B);return B}function createTriStateImageNode(D,C,A){var B=new Image();B.id=C;B.src=DEFAULT_CONFIG[UNCHECKED_NORM];D.appendChild(B);if(D.addEventListener){D.addEventListener("mouseover",onMouseOverImage(B.id),false);D.addEventListener("mouseout",onMouseOutImage(B.id),false);D.addEventListener("click",onTristateImageClick(B.id,A),false)}else{if(D.attachEvent){D.attachEvent("onmouseover",onMouseOverImage(B.id));D.attachEvent("onmouseout",onMouseOutImage(B.id));D.attachEvent("onclick",onTristateImageClick(B.id,A))}}}function createFieldNameHiddenField(D,C,B){var A=document.createElement("input");A.id=C;A.type="hidden";A.value=B;D.appendChild(A)}function createContainerNameHiddenField(D,B,C){var A=document.createElement("input");A.id=B;A.type="hidden";A.value=C;D.appendChild(A)}function attachOnclickEventsToDependentBoxes(E,D){var B=getAllCheckboxesInContainer(E);for(var A in B){var C=B[A];if(C.addEventListener){C.addEventListener("click",onCheckboxClick(D,C.id),false)}else{if(C.attachEvent){C.attachEvent("onclick",onCheckboxClick(D,C.id))}}}return B}function initTriStateCheckBox(A,G,F){var D=document.getElementById(A);var C=G;var B=A+".Value";if(F){C="";B=G}var I=D.childNodes[0];D.removeChild(I);var J=document.getElementById(B);if(!F){J=createHiddenStateField(D,B)}var K=A+".Img";createTriStateImageNode(D,K,F);var L=A+".Field";createFieldNameHiddenField(D,L,B);if(!F){var H=A+".Container";createContainerNameHiddenField(D,H,C)}D.appendChild(I);var E=attachOnclickEventsToDependentBoxes(C,K);updateStateAndImage(E,J,K)};