navHover = function() { 
	
	var lis = document.getElementById("navmenu").getElementsByTagName("LI"); 
	
		for (var i=0; i<lis.length; i++) { 
				
				lis[i].onmouseover=function() { this.className+=" iehover"; 
				
			} 
				lis[i].onmouseout=function() { 
					
				this.className=this.className.replace(new RegExp(" iehover\\b"), ""); 
			} 
		} 
	} 
	
	if (window.attachEvent) window.attachEvent("onload", navHover); 
	
	
/*
 * tab comment
 * int number
 * int index
 * */
 function change_option(number,index){
 	for(var i=1; i<=number; i++) {
 		document.getElementById("current" + i).className="";
 		document.getElementById("content" + i).style.display="none";
 	}
 	document.getElementById("current"+index).className="current";
 	document.getElementById("content"+index).style.display="block";	
	if(index==2){
			initialize('page2');
			getPageSizeCount();
		}
	if(index==1){
		
		initialize('page');
		getPageSizeCount();
		}
		
 }
 


var pageSizeCount; 
var currentPage;


function getPageSizeCount() {
    //document.write(pageSizeCount);
	 document.getElementById('pageSizeCount').innerHTML = pageSizeCount;
	 document.getElementById('pageSizeCount2').innerHTML = pageSizeCount;
	 //alert("getPageSizeCount");
	 
}


function updateCurrentPage() {
    document.getElementById('currentPage').innerHTML = currentPage;
	document.getElementById('currentPage2').innerHTML = currentPage;
}


function getCurrentPage() {
    document.write(currentPage);
}


function initialize(pageName) {
	//alert("call initialize" );
	
    if (document.getElementsByName(pageName) == null) {
		
        pageSizeCount = 0;
		
    } else if (document.getElementsByName(pageName).length == null) {
		
        pageSizeCount = 1;
		
    }else {
		
        pageSizeCount = document.getElementsByName(pageName).length;
		//alert(pageSizeCount);
    }
    

    if (parseInt(pageSizeCount) == 0 ) {
        document.getElementsByName('preBtn').disabled = true;
        document.getElementsByName('nextBtn').disabled = true;
        currentPage = 0;
    } else if (parseInt(pageSizeCount) == 1) {
        document.getElementsByName('preBtn').disabled = true;
        document.getElementsByName('nextBtn').disabled = true;
        currentPage = 1;
    } else {
        currentPage = 1;
        for (i=1; i<=pageSizeCount; i++) {
            if (i == parseInt(currentPage)) {
                displayPage(pageName, i);
            } else {
                hiddenPage(pageName, i);
            }
        }
    }
}


function displayPage(pageName, currentPage) {
    document.getElementsByName(pageName)[currentPage-1].style.display = "block";
}

function hiddenPage(pageName, currentPage) {
    document.getElementsByName(pageName)[currentPage-1].style.display = "none";
}


function previous(pageName) {    
    if (isHead(currentPage)) {
        hiddenPage(pageName, currentPage);
        currentPage--;
        displayPage(pageName, currentPage);
    }
    isDisplayBtn(currentPage);
}


function next(pageName) {
    if (isEnd(currentPage)) {
        hiddenPage(pageName, currentPage);
        currentPage++;
        displayPage(pageName, currentPage);        
    }
    isDisplayBtn(currentPage);
}

function isHead(currentPage) {
    if (1 == parseInt(currentPage)) {
        document.getElementsByName('preBtn').disabled = true;
        return false;
    } 
    return true;
}


function isEnd(currentPage) {
    if (parseInt(pageSizeCount) == parseInt(currentPage)) {
        document.getElementsByName('nextBtn').disabled = true;
        return false;
    }
    return true;
}


function isDisplayBtn(currentPage) {
    if (parseInt(pageSizeCount) != parseInt(currentPage)) {
        document.getElementsByName('nextBtn').disabled = false;
    }
    
    if (1 != parseInt(currentPage)) {
        document.getElementsByName('preBtn').disabled = false;
    }
}