function getElementsByClass( searchClass, domNode, tagName) {
	if (domNode == null) domNode = document;
	if (tagName == null) tagName = '*';
	var el = new Array();
	var tags = domNode.getElementsByTagName(tagName);
	var tcl = " "+searchClass+" ";
	for(i=0,j=0; i<tags.length; i++) {
		var test = " " + tags[i].className + " ";
		if (test.indexOf(tcl) != -1)
			el[j++] = tags[i];
	}
	return el;
}

function primera_palabra() {
	//Título IZQ
	var el = getElementsByClass('bottom-izq_tit');
	for(a=0; a<el.length; a++)
	{
		var orig = el[a].innerHTML;
		var final = orig.split(' ');
		var txt = final[0] + '<span>';
		for(i=1; i<final.length;i++)
		{
			txt = txt + final[i] + ' ';
		}
		txt = txt + '</span>';
		el[a].innerHTML = txt;
	}
	
	//Título MED
	var el = getElementsByClass('bottom-med_tit');
	for(a=0; a<el.length; a++)
	{
		var orig = el[a].innerHTML;
		var final = orig.split(' ');
		var txt = final[0] + '<span>';
		for(i=1; i<final.length;i++)
		{
			txt = txt + final[i] + ' ';
		}
		txt = txt + '</span>';
		el[a].innerHTML = txt;
	}
	
	//Título DER
	var el = getElementsByClass('bottom-der_tit');
	for(a=0; a<el.length; a++)
	{
		var orig = el[a].innerHTML;
		var final = orig.split(' ');
		var txt = final[0] + '<span>';
		for(i=1; i<final.length;i++)
		{
			txt = txt + final[i] + ' ';
		}
		txt = txt + '</span>';
		el[a].innerHTML = txt;
	}
}