function sheetviews(mode)
{
    viewsheet = document.getElementById("sheetviews");
    sheetviewimg = document.getElementById("sheetviewimg");
    if(viewsheet.style.display == "none")
    {
        viewsheet.style.display = "block";
        if( mode == 'en')
        {
		sheetviewimg.src = "/img/bookclose_en.jpg";
        }
	else
        {
        	sheetviewimg.src = "/img/bookclose.jpg";
	}
    }
    else
    {
        viewsheet.style.display = "none";
	if( mode == 'en')
	{
		sheetviewimg.src = "/img/bookopen_en.jpg";
	}
	else
	{
        	sheetviewimg.src = "/img/bookopen.jpg";
	}
    }


}

function viewup(idvalue,maxids) {

	viewDivObj = document.getElementById("openview");
	viewImgObj = document.getElementById("imageview");	
	viewImgOpenClose = document.getElementById("subimgopenclose");
	viewDivSelect =  document.getElementById("div_subimage_" + idvalue);
	subImgObj = document.getElementById("subimage_" + idvalue);
	viewDivObj.style.display = "block";
	viewImgObj.src = subImgObj.src;
	viewImgOpenClose.innerHTML = "閉じる";
		for(i = 1 ; i < maxids ;i++)
	{
		viewDivSelects = document.getElementById("div_subimage_" + i);
		viewDivSelects.style.border = "none";
	}
	viewDivSelect.style.border = "solid 1px #0099FF";
}

function subimgopenclose()
{
	viewDivObj = document.getElementById("openview");
	viewImgOpenClose = document.getElementById("subimgopenclose");
	if(viewDivObj.style.display == "none")
	{
		viewDivObj.style.display = "block";
		viewImgOpenClose.innerHTML = "閉じる";
	}
	else
	{
		viewDivObj.style.display = "none"
		viewImgOpenClose.innerHTML = "開く";
	}

}