function hideID(id) {
	//safe function to hide an element with a specified id
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'none';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'none';
		}
		else { // IE 4
			document.all.id.style.display = 'none';
		}
	}
}

function showID(id) {
	//safe function to show an element with a specified id
		  
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'inline';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'inline';
		}
		else { // IE 4
			document.all.id.style.display = 'inline';
		}
	}
}

function ShowSearch(x, v, startindex, stopindex) {
	for(i=startindex;i<=stopindex;i++) hideID(v+""+i);
	showID(v+""+x);
}

function check(theElement) {

    if (theElement.checked)
    {
        index1= theElement.name.indexOf("SubProductCheckBox");

        hidden = document.getElementById("Hidden"+theElement.name.substring(index1));
        index1=hidden.value.indexOf(";");

        startDate = hidden.value.substring(0, index1-1);
        arrStartDate=startDate.split("T");
        dateStartDate = arrStartDate[0].split("-");
        timeStartDate = arrStartDate[1].split(":");
        sDate = new Date(dateStartDate[0], dateStartDate[1]-1, dateStartDate[2], timeStartDate[0], timeStartDate[1], timeStartDate[2]);

        endDate = hidden.value.substring(index1+1);
        arrEndDate=endDate.split("T");
        dateEndDate = arrEndDate[0].split("-");
        timeEndDate = arrEndDate[1].split(":");
        eDate = new Date(dateEndDate[0], dateEndDate[1]-1, dateEndDate[2], timeEndDate[0], timeEndDate[1], timeEndDate[2]);

        z=0;
        theForm = theElement.form;
        conflict=false;
        while (z != theForm.length)
        {
            if(theForm[z].type == 'hidden')
            {
                if (theForm[z].name.indexOf('HiddenSubProductCheckBox') != -1)
                {

                    index1=theForm[z].value.indexOf(";");

                    startDateTemp = theForm[z].value.substring(0, index1-1);
                    arrStartDateTemp=startDateTemp.split("T");
                    dateStartDateTemp = arrStartDateTemp[0].split("-");
                    timeStartDateTemp = arrStartDateTemp[1].split(":");
                    sDateTemp = new Date(dateStartDateTemp[0], dateStartDateTemp[1]-1, dateStartDateTemp[2], timeStartDateTemp[0], timeStartDateTemp[1], timeStartDateTemp[2]);

                    endDateTemp = theForm[z].value.substring(index1+1);
                    arrEndDateTemp=endDateTemp.split("T");
                    dateEndDateTemp = arrEndDateTemp[0].split("-");
                    timeEndDateTemp = arrEndDateTemp[1].split(":");
                    eDateTemp = new Date(dateEndDateTemp[0], dateEndDateTemp[1]-1, dateEndDateTemp[2], timeEndDateTemp[0], timeEndDateTemp[1], timeEndDateTemp[2]);

                    if ((sDate > sDateTemp) && (eDateTemp > sDate))
                    {
                        conflict = true;
                    }
                }
            }
            z++;
        }

        if (conflict)
        {
            alert("A session has already been selected for the same Date and time please select a different session.");
            theElement.checked = false;
        }

    }
}