var imgdims=new Array();



function zoomimg(imgid,zm) {
	embedimg=document.getElementById('embedimg' + imgid);
	imgwid=embedimg.width;
	imghei=embedimg.height;

	if(imgdims.length<imgid) imgdims[imgid]=[imgwid,imghei];
	else {
		if(!imgdims[imgid]) imgdims[imgid]=[imgwid,imghei]
	}

	if(zm>0) {
		embedimg.width=imgwid*zm;
		embedimg.height=imghei*zm;
		expandimg(imgid,3);
	} else {
		embedimg.width=imgdims[imgid][0];
		embedimg.height=imgdims[imgid][1];
		expandimg(imgid,3);
	}
}

function expandimg(imgid,flag) {
	imgcontain=document.getElementById('imgcontain' + imgid);
	bufferimg=document.getElementById('bufferimg' + imgid);
	embedimg=document.getElementById('embedimg' + imgid);
	imgicon=document.getElementById('iconimg'+imgid);

	if(flag==2)	if(imgcontain.style.position=='absolute') { flag=0 } else { flag=1 };
	if(flag==3)	if(imgcontain.style.position=='absolute') { flag=1 } else { flag=0 };
	
	
	imgwid=embedimg.width;
	imghei=embedimg.height;

	if(imgwid>0) {
		if(flag==1) {
			if(imgwid>488) {
				midpoint=410-Math.round(imgwid/2);
				if(midpoint<10)  midpoint=10;

				imgcontain.style.width=imgwid+0;
				imgcontain.style.left=midpoint;
				imgcontain.style.position='absolute';
				imgcontain.style.borderStyle='solid';
				imgcontain.style.borderColor='#333333';
				imgcontain.style.borderWidth=2;
				bufferimg.style.height=imghei+1;
				if(imgicon.width==22) imgicon.src="/board/images/imgexpand1.gif";
			} else {
				imgcontain.style.width=488;
				bufferimg.style.height=1;
				imgcontain.style.borderStyle='none';
				imgcontain.style.position='static';
				if(imgicon.width==22) imgicon.src="/board/images/imgexpand0.gif";
			}
		} else {
			imgcontain.style.width=488;
			bufferimg.style.height=1;
			imgcontain.style.borderStyle='none';
			imgcontain.style.position='static';
			if(imgicon.width==22) imgicon.src="/board/images/imgexpand0.gif";
		}
	}
}

function mouseoverimg(imgid) {
		imgcontain=document.getElementById('imgcontain' + imgid);
		imgicon=document.getElementById('iconimg'+imgid);
		embedimg=document.getElementById('embedimg' + imgid);
		imgwid=embedimg.width;
		
		if (imgwid>488)	{
			imgicon.width=22;
			if(imgcontain.style.position=='absolute') {
				imgicon.src="/board/images/imgexpand1.gif";
			} else {
				imgicon.src="/board/images/imgexpand0.gif";
			}
		}
}

function mouseoutimg(imgid) {
		imgicon=document.getElementById('iconimg'+imgid);
		imgicon.src="/images/pix.gif";
		imgicon.width=13;
}