function limitImageSize(cImage, limitSize){
	cImage = eval('document.'+cImage);
	newImage = new Image();
	newImage.src = cImage.src;
	ratio = newImage.width / newImage.height;
	if(newImage && (newImage.width > limitSize || newImage.height > limitSize)){
		if (newImage.width >= newImage.height){
			cImage.width = limitSize;
			cImage.height = limitSize / ratio;
		}
		else{
			cImage.height = limitSize;
			cImage.width = limitSize * ratio;
		}
	}else{
		cImage.width = newImage.width;
		cImage.height = newImage.height
	}
}

function limitImageSizeWidth(cImage, limitSize){
	cImage = eval('document.'+cImage);
	newImage = new Image();
	newImage.src = cImage.src;
	ratio = newImage.width / newImage.height;
	if(newImage.width > limitSize){
		cImage.width = limitSize;
	}else{
		cImage.width = newImage.width;
		cImage.height = newImage.height
	}
}