function resize(valor){

	var altura = document.documentElement.clientHeight;
	
	
	if(valor<=altura){
		document.getElementById('site').style.height = "100%";
		//document.getElementById('flash').style.height = "100%";
		
	}else{
		//document.write(altura);
		document.getElementById('site').style.height = valor+"px";
		//document.getElementById('flash').style.height = valor+"px";
		
	}	
}

resize("680");