function getElementsByClass(searchClass,node,tag) {

	var classElements = new Array();
	if (node == null)
		node = document;
	if (tag == null)
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	var j = 0;
	for (i = 0; i < elsLen; i++) {
		if (pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}

function amosa(divId) {

	classElements	= getElementsByClass('galeria');
	for(i=0; i<classElements.length; i++) {
		classElements[i].style.display="none";
	}
	document.getElementById(divId).style.display="";

}

function wamosa(divId){
	window.open("./html/"+divId+".html","mywindow","width=900,height=420,left=150,top=200");
}