var ie = (navigator.appName.toLowerCase().indexOf('explorer') != -1);
var ns = (navigator.appName.toLowerCase().indexOf('netscape') != -1);

function get_elm(id) {
	if (document.getElementById) return document.getElementById(id)
	else if (document.all) return document.all[id]
	else if (document.layers) return document.layers[id]
	else return null;
}

function get_elm_css(id) {
	if (document.getElementById) return document.getElementById(id).style
	else if (document.all) return document.all[id].style
	else if (document.layers) return document.layers[id]
	else return null;
}

function get_inside_width(){
	if(ie) return document.body.clientWidth
	else return window.innerWidth
}

function get_inside_height(){
	if(ie) return document.body.clientHeight
	else return window.innerHeight
}