function isExplorer() {
	var sAgent = navigator.userAgent.toLowerCase();
	if (sAgent.indexOf('msie') != -1) {
		return true;
	}
	else {
		return false;
	}
}	


/**
* @desc Resizes the contents so no scrollbars appear under MoZilla.
*/
function resizeContents() {
	if (!isExplorer()) {
		// resize elements so they fit screen
		document.getElementById('tab_main').style.height = window.innerHeight - 35;
		document.getElementById('div_content').style.height = window.innerHeight - 131;
		
		// it is important to set the width of the DIV first!!!
		document.getElementById('div_content').style.width = window.innerWidth - 414;
		document.getElementById('tab_main').style.width = window.innerWidth - 8;
	}
}