function email_validate(value) {
	if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(value)){
		return (true);
	} else {
		return (false);
	}
}

function changeImg(idImg, pstrImg,texto){
	document.getElementById(idImg).src = pstrImg;
}

function changeHomeImg(idImg, pstrImg, texto, id, total){
	document.getElementById(idImg).src = pstrImg;
	if(texto!='false'){
		document.getElementById('textoverimage').innerHTML = texto;
		if(texto==''){
			document.getElementById('textoverimage').style.display = 'none';
		}else{
			document.getElementById('textoverimage').style.display = 'block';
		}
	}
}

var autotime;
function changeImgAuto(){
	counter++;
	if(counter>=imgauto.length){counter=1;}
	changeHomeImg('imgCentral',imgauto[counter],textoauto[counter],counter,imgauto.length);
	autotime=setTimeout("changeImgAuto();",4500);
}

function stopImgAuto(){
	clearTimeout(autotime);
}