function getViewportSize() { 
	var size = [0, 0]; 
	if (typeof window.innerWidth != "undefined") { 
		size = [window.innerWidth, window.innerHeight];
	} 
	else if (typeof document.documentElement != "undefined" && typeof document.documentElement.clientWidth != "undefined" && document.documentElement.clientWidth != 0) {
		size = [document.documentElement.clientWidth, document.documentElement.clientHeight]; 
	}
	else {
		var $body = document.getElementsByTagName("body")[0];
		if ($body != undefined){
			size = [$body.clientWidth, $body.clientHeight]; 
		} else {
			size = [1200, 900];
		}
	}
	return size; 
}

function onResize() {
	var size = getViewportSize();
	size[1] -= 10;
	size[0] = Math.min(size[1] * 1.6, size[0]);
	size[1] = size[0] / 1.6;
	if (size[1] < 500) size[1] = 500;
	if (size[0] < 800) {
		size[0] = 800;
		size[1] -= 10;
	}
	
	var el = document.getElementById("AbrauDurso");
	if (el){
		el.style.width = size[0] + "px";
		el.style.height = size[1] + "px";
	}
	//alert(_w*_sc + ' ' + (_h*_sc + 123));
	return size;
};