var SearchFocus = false;
    var SearchText = "Search";
    
    function doSearch()
    {
        //alert("search");
        var Search = document.getElementById('txt_SearchText').value;
        if(Search != SearchText && Search != "")
        {
            //alert("redirect");
            window.location.href = "search.aspx?task=view&option=search&SearchText=" + Search;
        }
    }
    
    function captureEnter(evt) {
        //alert("capture1");
        var searchField = document.getElementById("txt_SearchText");
        var evt = (evt) ? evt : ((event) ? event : null);
        var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
        var key;
        
        if(document.all)
        {
            key=evt.keyCode;
        }
        else
        {   
            key=evt.which;
        }
        
        //alert(key);
        if((key == 13)) {
            //alert("capture");
            if(node.type=="text" || node.type=="password" || node.type=="submit" || node.type=="button")
            {
                //alert("valid control");
                if(searchField.value != SearchText)
                {
                    doSearch();
                    return false;
                }
                return true;
            }
            return false;
        }
    }
    
    document.onkeypress = captureEnter;