// JScript File
function showViola()
{       
    document.getElementById('div_Entra').style.visibility='visible';
}

function setWindowHeight() 
{ 
    var myHeight = 0; 
    var myWidth = 0; 

    if( typeof( window.innerHeight ) == 'number' ) {
        //Non-IE
        myHeight = window.innerHeight;
        myWidth = window.innerWidth;
    } 
    else if( document.documentElement && document.documentElement.clientHeight ) {
        //IE 6+ in 'standards compliant mode'
        myHeight = document.documentElement.clientHeight;
        myWidth = document.documentElement.clientWidth;
    } 
    else if( document.body && document.body.clientHeight ) {
        //IE 4 compatible
        myHeight = document.body.clientHeight;
        myWidth = document.body.clientWidth;
    }
    window.location.href = 'main.aspx?h=' + myHeight + '&w=' + myWidth;
}