function mouseOver(element, src)
{
 x=document.getElementById(element);
 x.src = src;
}

function mouseOut(element, src)
{
 x=document.getElementById(element);
 x.src = src;
//alert('aaa');
}

function mouseDown(element, src)
{
 x=document.getElementById(element);
 x.src = src;
//alert('nn');
}

function mouseUp(element, src)
{
 x=document.getElementById(element);
 x.src = src;
//alert('nn');
}


function ventanaChica(url, nombre)
{
window.open(url, nombre, "left =10, top=10, scrollbars=yes, resizable=yes, status=no, height=550, width=460");
}