window.onload = function(){init_screen();};
window.onresize = setScreenClass;
var set_class = '';

function init_screen(){
	set_class = document.body.className;
	setScreenClass();
}

function setScreenClass(){
	var fmt = document.documentElement.clientWidth;
	var cls = (fmt<=240)?'pda_ver'
		:(fmt>240&&fmt<=320)?'pda_hor'
		:(fmt>320&&fmt<=640)?'screen_ultralow'
		:(fmt>640&&fmt<=800)?'screen_low'
		:(fmt>800&&fmt<=1024)?'screen_med'
		:(fmt>1024&&fmt<=1280)?'screen_high'
		:(fmt>1280&&fmt<=1600)?'screen_wide'
		:'screen_1920';
		
	document.body.className = set_class+' '+cls;
};