function showHide(contentToShow, readMoreButton, backgroundPosition) {
	if(backgroundPosition==null){
		backgroundPosition = '0 -100px';
	}
    if (document.getElementById(contentToShow)) {
        if (document.getElementById(contentToShow).style.display == 'block') {
            document.getElementById(contentToShow).style.display = 'none';
            document.getElementById(readMoreButton).style.backgroundPosition = '0 0';
        } else {
            document.getElementById(contentToShow).style.display = 'block';
            document.getElementById(readMoreButton).style.backgroundPosition = backgroundPosition;
        }
    }
}

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"; 
    } 
}

window.onload = externalLinks;