function preloadImg(){
	if (document.images){
		var imgSrc = preloadImg.arguments;
		imgArray = new Array(imgSrc.length);
		for (var c = 0; c < imgSrc.length; c++){
			imgArray[c] = new Image();
			imgArray[c].src = imgSrc[c];
		}
  }
}

function setImgSrc(idVal, srcVal){
  if (document.images) document.images[idVal].src = srcVal;
}

function setClass(obj, cl){
	if (obj.className!=cl) obj.className = cl;
}

function setClassById(objid, cl){
	if (!cl) cl = '';
	document.getElementById(objid).className = cl;
}

function changeDisplayById(objId){
	for (c = 0; c < changeDisplayById.arguments.length; c++){
		obj = document.getElementById(changeDisplayById.arguments[c]);
		if (obj.style.display == 'none') obj.style.display = 'block';
		else obj.style.display = 'none';
	}
}

function gotoURL(url){
	if (!url) url = "/";
	if (window.event){
		var src = window.event.srcElement;
		if((src.tagName != 'A') && ((src.tagName != 'IMG') || (src.parentElement.tagName != 'A'))){
			if (window.event.shiftKey) window.open(url);
			else document.location = url;
		}
	} else document.location = url;
}

function popupURL(url){
	window.open(url);
}

function getLeftPos(obj){
	var res = 0;
	while (obj){
		res += parseInt(obj.offsetLeft);
		obj = obj.offsetParent;
	}
	return res;
}

function getTopPos(obj){
	var res = 0;
	while (obj){
		res += parseInt(obj.offsetTop);
		obj = obj.offsetParent;
	}
	return res;
}

function chbCheckAll(formObj, checkName, checkVal){
	var el = formObj.elements;
	for (count = 0; count < el.length; count++)
		if (el[count].name == checkName + '[]')
			if (!el[count].disabled) el[count].checked = checkVal;
}

function chbExamAll(formObj, checkName, resName){
	var checkCount = 0;
	var boxCount = 0;
	var el = formObj.elements;
	for (count = 0; count < el.length; count++)
		if (el[count].name == checkName + '[]'){
			boxCount++;
			if (el[count].checked || el[count].disabled) checkCount++;
		}
	formObj.elements[resName].checked = (checkCount == boxCount);
}

function chbIsAllEmpty(formObj, checkName){
	var checkCount = 0;
	var boxCount = 0;
	var el = formObj.elements;
	for (count = 0; count < el.length; count++)
		if (el[count].name == checkName + '[]'){
			boxCount++;
			if (el[count].checked) checkCount++;
		}
	return(checkCount == 0);
}

function chbIsOnlyOne(formObj, checkName){
	var checkCount = 0;
	var boxCount = 0;
	var el = formObj.elements;
	for (count = 0; count < el.length; count++){
		if (el[count].name == checkName + '[]'){
			boxCount++;
			if (el[count].checked) checkCount++;
		}
	}
	return(checkCount == 1);
}

function disableAll(){
	for (c1 = 0; c1 < document.forms.length;  c1++){
		var formElements = document.forms[c1].elements;
		for (c2 = 0; c2 < formElements.length;  c2++) formElements[c2].disabled = true;
	}
}

function showPopup(url){
  var printWin = window.open(url, '', 'width=488, height=530, scrollbars=no, resizable=no');
}

var isNav4, isNav6, isIE4;
function setBrowser(){
    if (navigator.appVersion.charAt(0) == "4"){
        if (navigator.appName.indexOf("Explorer") >= 0){
            isIE4 = true;
        }else{
            isNav4 = true;
        }
    }else if (navigator.appVersion.charAt(0) > "4"){
        isNav6 = true;
    }
}
function getIdProperty( id, property ){
	if (isNav6){
        var styleObject = document.getElementById( id );
        if (styleObject != null){
            styleObject = styleObject.style;
            if (styleObject[property]){
                return styleObject[ property ];
            }
        }
        styleObject = getStyleBySelector( "#" + id );
        return (styleObject != null) ? styleObject[property] : null;
    }else if (isNav4){
        return document[id][property];
    }else{
		alert(document.all[id].style);
		
        return document.all[id].style[property];
    }
}

function setIdProperty( id, property, value ){
    if (isNav6){
        var styleObject = document.getElementById( id );
        if (styleObject != null){
            styleObject = styleObject.style;
            styleObject[ property ] = value;
        }
    }else if (isNav4){
        document[id][property] = value;
    }else if (isIE4){
         document.all[id].style[property] = value;
    }
}

function getStyleBySelector( selector ){
    if (!isNav6){
        return null;
    }
    var sheetList = document.styleSheets;
    var ruleList;
    var i, j;
    for (i=sheetList.length-1; i >= 0; i--){
        ruleList = sheetList[i].cssRules;
        for (j=0; j<ruleList.length; j++){
            if (ruleList[j].type == CSSRule.STYLE_RULE &&
                ruleList[j].selectorText == selector){
                return ruleList[j].style;
            }   
        }
    }
    return null;
}

function addEvent(elem, evname, func){
		if(window.showModalDialog){
			elem.attachEvent("on" + evname, func);
		}else{
			elem.addEventListener(evname, func, true);
		}
	}