Add one divtag with id=divSearch and place the multiview content inside that div.
In defaulttimesheet.aspx inside openDialog added this code to fade before showmodaldialog
$get('<%=divSearch.ClientID %>').className = "gray";
and following code after showmodaldialog
$get('<%=divSearch.ClientID %>').className = "white";.
Add these two classes inside default.css
.gray
{
position: absolute;
top: 0%;
left: 0%;
width: 100%;
height: 100%;
opacity: .5;
filter: alpha(opacity=50);
}
.white
{
position: absolute;
top: 0%;
left: 0%;
width: 100%;
height: 100%;
opacity: 1;
filter: alpha(opacity=100);
}