function showHide(id){

    var element = document.getElementById(id);

    if(element.style.display == 'none')
        element.style.display = 'block';
    else if(element.style.display == 'block')
        element.style.display = 'none';
    else if(element.style.display == '')
        element.style.display = 'none';
}

function checkUncheckAll(theElement){
    var theForm = theElement.form, z = 0;
    for(z=0; z<theForm.length;z++){
        if(theForm[z].type == 'checkbox' && theForm[z].name != 'checkAll'){
            theForm[z].checked = theElement.checked;
        }
    }
}