<span style="font-size:14px;"> onBeforeCheck: function(node,checked){
if(node.level !='1' && checked==true){
$("#search_orgId").combotree('tree').tree("options").cascadeCheck = false;
}else if(node.level !='1' && node.level !='2' && checked==false){
$("#search_orgId").combotree('tree').tree("options").cascadeCheck = false;
}else{
$("#search_orgId").combotree('tree').tree("options").cascadeCheck = true;
}
}</span>