prev1=new Image();prev1.src="prev_a.gif";prev2=new Image();prev2.src="prev_g.gif";next1=new Image();next1.src="next_a.gif";next2=new Image();next2.src="next_g.gif";home1=new Image();home1.src="home_a.gif";home2=new Image();home2.src="home_g.gif";
function active(imgName){img1=eval(imgName+"1.src");document[imgName].src=img1;}
function inactive(imgName){img2=eval(imgName+"2.src");document[imgName].src=img2;}
function onColor(xx){xx.style.backgroundColor='#000080';}
function offColor(xx){xx.style.backgroundColor='#0080c0';}
function email_corretta(str) {var objRegExp = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-]{2,})+\.)+([a-zA-Z0-9]{2,})+$/; return objRegExp.test(str);}