var MSIE = navigator.userAgent.indexOf('MSIE')>=0?true:false;
var SAFARI = navigator.userAgent.indexOf('Safari')>=0?true:false;

var __scrollTop = 0;

function switchDisplay(element){
	if(element.style.display=='block' || element.style.display==''){
		element.style.display = 'none';
	}else{
		element.style.display = 'block';
	}
}

function f_clientWidth() {
	return f_filterResults (
		window.innerWidth ? window.innerWidth : 0,
		document.documentElement ? document.documentElement.clientWidth : 0,
		document.body ? document.body.clientWidth : 0
	);
}

function f_clientHeight() {
	return window.innerHeight ? window.innerHeight : document.documentElement ? document.documentElement.clientHeight : document.body ? document.body.clientHeight : 0;
}

function f_filterResults(n_win, n_docel, n_body) {
	var n_result = n_win ? n_win : 0;
	/*if (n_docel && (!n_result || (n_result > n_docel)))
		n_result = n_docel;*/
	return n_body && (!n_result || (n_result > n_body)) ? n_body : n_result;
}

function getDocumentScrollTop(){
	var scrollTop = 0;
	//if(document.documentElement)
		scrollTop = document.documentElement.scrollTop;
	//else
		//scrollTop = document.body.scrollTop;
	__scrollTop = scrollTop;
	return (scrollTop+10);
}

function resize(){  
	var frame = document.getElementById("frame1");  
	var htmlheight = document.body.parentNode.scrollheight;  
	var windowheight = window.innerheight;  
	if ( htmlheight < windowheight ) { 
		document.body.style.height = windowheight + "px"; 
		frame.style.height = windowheight + "px"; 
	}  else { 
		document.body.style.height = htmlheight + "px"; 
		frame.style.height = htmlheight + "px"; 
	}  
}