//	OPEN EXTERNAL LINKS IN A NEW WINDOW
	function externalLinks() { 
		if (!document.getElementsByTagName) return; 
		var anchors = document.getElementsByTagName("a"); 
		for (var i=0; i<anchors.length; i++) { 
			var anchor = anchors[i]; 
			if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external") 
			anchor.target = "_blank"; 
		} 
	} 

//	SHOW OR HIDE A GIVEN ELEMENT
function toggle(el) {
	if ( document.getElementById(el).style.display == '' ) {
		document.getElementById(el).style.display = 'none';
	} else {
		document.getElementById(el).style.display = '';
	}
}

//	HIDE ALL THE DATA SHEET DIVS
function hide_elements() {
	if ( document.getElementById('data_sheets') != null ) {
		document.getElementById('data_sheets').style.display = 'none';
	}
	if ( document.getElementById('samples') != null ) {
		document.getElementById('samples').style.display = 'none';
	}

}

	window.onload = externalLinks;
	window.onload = hide_elements;