/**********************************************************
*
*	functions.js		常用的javascript功能
*	
***********************************************************/
/**
*	
*	切換全選的checkBox
*	@param	oSrc		表單名稱
*	@param	oDes		要切換的checkBox陣列
*
*	相關function refElement、checkbox_all_checked、is_single_element
*	
*/
function switchAllChecked(oSrc, oDes)
{
	if(!oSrc) return;
	if(!oDes) return;

	if (typeof(oDes) == "undefined" || oDes == null) {
		oDes = refElement('listchk[]', oSrc.form);
	}
	checkbox_all_checked(oDes, oSrc.checked);
}

function refElement(rE, rF)
{
	var oF;
	if (typeof(rE) == "object") {
		return rE;
	} else if (typeof(rE) == "string" || typeof(rF) == "number") {
		if (oF = refForm(rF)) {
			return oF.elements[rE];
		} else {
			return false;
		}
	} else {
		return false;
	}
}

/*
*/

function checkbox_all_checked(o, b)
{
	//var b = new Boolean(b);
	if (is_single_element(o)) {
		o.checked = b;
	} else {
		var i;
		for (i=0; i<o.length; i++) {
			o[i].checked = b;
		}
	}
}

/*
* 判斷是否為陣列
*/

function is_single_element(o)
{
	return (typeof(o.length) == "undefined");
}

/*
*	確認訊息
*/

function checkDelete(s)
{
	return window.confirm(s);
}

/*
*	確認訊息
*/

 function checkBox() {    
    var ck = document.forms[0].elements["chkbox[]"]; 
    if (ck == null) return false;    
    if (isNaN(ck.length)) {    
       if (ck.checked) return true;    
    } else {       
       for (var i=0;i<ck.length;i++)    
          if (ck[i].checked) return true;    
    }           
    alert("您尚未勾選項目");    
    return false;    
 }
 
/**
*	網址導向
*/
 function goURL(url_link, url_target) {
  url_target.location = url_link;
} 

/**
 * This array is used to remember mark status of rows in browse mode
 */
var marked_row = new Array;

/**
 * Sets/unsets the pointer and marker in browse mode
 *
 * @param   object    the table row
 * @param   integer  the row number
 * @param   string    the action calling this script (over, out or click)
 * @param   string    the default background color
 * @param   string    the color to use for mouseover
 * @param   string    the color to use for marking a row
 *
 * @return  boolean  whether pointer is set or not
 */
function setPointer(theRow, theRowNum, theAction, theDefaultColor, thePointerColor, theMarkColor)
{
    var theCells = null;

    // 1. Pointer and mark feature are disabled or the browser can't get the
    //    row -> exits
    if ((thePointerColor == '' && theMarkColor == '')
        || typeof(theRow.style) == 'undefined') {
        return false;
    }

    // 2. Gets the current row and exits if the browser can't get it
    if (typeof(document.getElementsByTagName) != 'undefined') {
        theCells = theRow.getElementsByTagName('td');
    }
    else if (typeof(theRow.cells) != 'undefined') {
        theCells = theRow.cells;
    }
    else {
        return false;
    }

    // 3. Gets the current color...
    var rowCellsCnt  = theCells.length;
    var domDetect    = null;
    var currentColor = null;
    var newColor     = null;
    // 3.1 ... with DOM compatible browsers except Opera that does not return
    //         valid values with "getAttribute"
    if (typeof(window.opera) == 'undefined'
        && typeof(theCells[0].getAttribute) != 'undefined') {
        currentColor = theCells[0].getAttribute('bgcolor');
        domDetect    = true;
    }
    // 3.2 ... with other browsers
    else {
        currentColor = theCells[0].style.backgroundColor;
        domDetect    = false;
    } // end 3

    // 3.3 ... Opera changes colors set via HTML to rgb(r,g,b) format so fix it
    if (currentColor.indexOf("rgb") >= 0)
    {
        var rgbStr = currentColor.slice(currentColor.indexOf('(') + 1,
                                     currentColor.indexOf(')'));
        var rgbValues = rgbStr.split(",");
        currentColor = "#";
        var hexChars = "0123456789ABCDEF";
        for (var i = 0; i < 3; i++)
        {
            var v = rgbValues[i].valueOf();
            currentColor += hexChars.charAt(v/16) + hexChars.charAt(v%16);
        }
    }

    // 4. Defines the new color
    // 4.1 Current color is the default one
    if (currentColor == ''
        || currentColor.toLowerCase() == theDefaultColor.toLowerCase()) {
        if (theAction == 'over' && thePointerColor != '') {
            newColor              = thePointerColor;
        }
        else if (theAction == 'click' && theMarkColor != '') {
            newColor              = theMarkColor;
            marked_row[theRowNum] = true;
            // Garvin: deactivated onclick marking of the checkbox because it's also executed
            // when an action (like edit/delete) on a single item is performed. Then the checkbox
            // would get deactived, even though we need it activated. Maybe there is a way
            // to detect if the row was clicked, and not an item therein...
            // document.getElementById('id_rows_to_delete' + theRowNum).checked = true;
        }
    }
    // 4.1.2 Current color is the pointer one
    else if (currentColor.toLowerCase() == thePointerColor.toLowerCase()
             && (typeof(marked_row[theRowNum]) == 'undefined' || !marked_row[theRowNum])) {
        if (theAction == 'out') {
            newColor              = theDefaultColor;
        }
        else if (theAction == 'click' && theMarkColor != '') {
            newColor              = theMarkColor;
            marked_row[theRowNum] = true;
            // document.getElementById('id_rows_to_delete' + theRowNum).checked = true;
        }
    }
    // 4.1.3 Current color is the marker one
    else if (currentColor.toLowerCase() == theMarkColor.toLowerCase()) {
        if (theAction == 'click') {
            newColor              = (thePointerColor != '')
                                  ? thePointerColor
                                  : theDefaultColor;
            marked_row[theRowNum] = (typeof(marked_row[theRowNum]) == 'undefined' || !marked_row[theRowNum])
                                  ? true
                                  : null;
            // document.getElementById('id_rows_to_delete' + theRowNum).checked = false;
        }
    } // end 4

    // 5. Sets the new color...
    if (newColor) {
        var c = null;
        // 5.1 ... with DOM compatible browsers except Opera
        if (domDetect) {
            for (c = 0; c < rowCellsCnt; c++) {
                theCells[c].setAttribute('bgcolor', newColor, 0);
            } // end for
        }
        // 5.2 ... with other browsers
        else {
            for (c = 0; c < rowCellsCnt; c++) {
                theCells[c].style.backgroundColor = newColor;
            }
        }
    } // end 5

    return true;
} // end of the 'setPointer()' function