window.onload = function(){
	var subMenuWidth = document.getElementById('SubMenu').offsetWidth;
    var showScreen = document.getElementById('ShowScreen');
	eval("showScreen.style.width = '" + (subMenuWidth*4-307) + "px';");
}
window.onresize = function(){
	var subMenuWidth = document.getElementById('SubMenu').offsetWidth;
    var showScreen = document.getElementById('ShowScreen');
	eval("showScreen.style.width = '" + (subMenuWidth*4-307) + "px';");
}
function changeScreenShot(val){
    var Screen = document.getElementById('ScreenShots').getElementsByTagName('img');
    //alert(Screen.length);
    for(i = 0; i < Screen.length ; i++){
        Screen[i].style.display='none';
    }
    document.getElementById(val).style.display="block";
}