function resizeThumb(){
	if (document.getElementById('bigThumb').width>500){
		document.getElementById('bigThumb').style.width= 500+'px';
	}
	
}

function resize(){
	self.resizeTo(810,screen.height*0.66)
}

function updateSizeFields(e){
    s = e.value.split('X');
    var width = s[0];
    var height = s[1];
    document.getElementById('size_width').value = width;
    document.getElementById('size_height').value = height;
}