function checkForm(PageName){
        var frm = document.forms[1]
        if (PageName == "KeyResultLink" && frm.strKeyword.value == ""){
            alert("You must enter a key word.")
            frm.strKeyword.focus();
            return false;
        }else if (PageName == "ResultLink" && !IsChecked()){
            alert("You must check at least one topic.")
			var frm2 = document.forms[2]
            frm2.intTopicID[0].focus();
            return false;
        }else{
            frm.action = PageName+".asp"
            frm.submit()
        }
    }

    function IsChecked(){ 
        var frm = document.forms[2]
        for (var i=0; i < frm.intTopicID.length; i++) {
		    if (frm.intTopicID[i].checked){
			    return true
			    break
		    }
		}
        return false
    }

    function checkAll(a){
        var frm = document.forms[2]
		if (a == "Yes"){
			for (var i=0; i < frm.intTopicID.length; i++) {
				frm.intTopicID[i].checked = true
			}
		}else{
			for (var i=0; i < frm.intTopicID.length; i++) {
				frm.intTopicID[i].checked = false
			}
		}
    }

	function checkkey(e){
	    var frm = document.forms[1];
	    if (window.event.keyCode == 13){
            if (frm.strKeyword.value != ""){
                checkForm('KeyResultLink')
            }else{
		        checkForm('ResultLink')
		    }
        }
	}