//script for compare functionality			
function doCount(el, elName){
	var count = 0;
	var cBoxes = document.aspnetForm.elements[elName];
	for (var i=0;i < cBoxes.length;i++){
		if (cBoxes[i].checked) {
			count++;
		}
	}
	if (count > 5) {
	    var alertMsg = "You may compare up to five items at a time.\n\nThe last selection will be ignored.";
	    alert(alertMsg);
		el.checked = false;
	}
}

function doBaseCompare(url, alertMessage, elName)
{
	var count = 0;
	var strVars = "";
	var cBoxes = document.aspnetForm.elements[elName];
	for (var i=0;i < cBoxes.length;i++){
		if (cBoxes[i].checked) {
			count++;
			if (strVars != "") {
				strVars = strVars + "&";	
			}
			
			strVars = strVars + "id=" + cBoxes[i].value;
		}
	}
	
	if (count > 1) {
		window.location = url + strVars;
	} else {
		alert(alertMessage);
	}
}

// Does a comparison based on the product type.  The only legal product type values are:
// desktop, opteron, notebook, embedded, gpu, motherboard
function doCompare(productType) {
    switch (productType) {
        case "desktop":
            doDesktopCPUCompare();
            break;
        case "notebook": 
            doNotebookCPUCompare();
            break;
        case "opteron":
            doOpteronCPUCompare();
            break;
        case "embedded":
            doEmbeddedCPUCompare();
            break;
        case "motherboard":
            doMotherboardCompare();
            break;
        case "gpu":
            doGraphicCardCompare();
            break;
        case "workstationGpu":
            doWorkstationGraphicCardCompare();
            break;
        case "mobilityGpu":
            doMobilityGPUCompare();
        case "TVTuner":
            doTVTunerCompare();
        default:
            break;
    }
}

function doDesktopCPUCompare(){
    var alertMsg = "Please select two to five products to compare.";
    doBaseCompare('DesktopCPUSideBySide.aspx?', alertMsg, 'chkOpnDesktop');
}

function doNotebookCPUCompare(){
    var alertMsg = "Please select two to five products to compare.";
    doBaseCompare('NotebookCPUSideBySide.aspx?', alertMsg, 'chkOpnNotebook');
}

function doOpteronCPUCompare(){
    var alertMsg = "Please select two to five products to compare.";
    doBaseCompare('OpteronCPUSideBySide.aspx?', alertMsg, 'chkOpnOpteron');
}

function doEmbeddedCPUCompare(){
    var alertMsg = "Please select two to five products to compare.";
    doBaseCompare('EmbeddedCPUSideBySide.aspx?', alertMsg, 'chkOpnEmbedded');
}

function doMotherboardCompare(){
    var alertMsg = "Please select two to five products to compare.";
    doBaseCompare('MotherboardSideBySide.aspx?', alertMsg, 'chkOpnMotherboard');
}

function doGraphicCardCompare(){
    var alertMsg = "Please select two to five products to compare.";
    doBaseCompare('GraphicCardSideBySide.aspx?', alertMsg, 'chkOpnGraphicsCard');
}
function doWorkstationGraphicCardCompare(){
    var alertMsg = "Please select two to five products to compare.";
    doBaseCompare('WorkstationGraphicCardSideBySide.aspx?', alertMsg, 'chkOpnWorkstationGraphicsCard');
}
function doMobilityGPUCompare(){
    var alertMsg = "Please select two to five products to compare.";
    doBaseCompare('MobilityGPUSideBySide.aspx?', alertMsg, 'chkOpnMobilityGPU');
}
function doTVTunerCompare(){
    var alertMsg = "Please select two to five products to compare.";
    doBaseCompare('TVTunerSideBySide.aspx?', alertMsg, 'chkOpnTVTuner');
}