function swapOver(img) {
	var source = img.src;
	var prefix = source.substring(source.lastIndexOf("../App_Themes/Default/NewImages/"), source.lastIndexOf('_') + 1);
	var suffix = source.substring(source.lastIndexOf('.'));
	img.src=prefix+"b"+suffix;
}

function swapOut(img) {
	var source = img.src;
	var suffix = source.substring(source.lastIndexOf('.'));
	var prefix = source.substring(source.lastIndexOf("../App_Themes/Default/NewImages/"), source.lastIndexOf('_') + 1);
	img.src=prefix+"a"+suffix;
}
function rollOn(oSubmit) {
    oSubmit.style.backgroundImage = "url(../App_Themes/Default/NewImages/login_b.jpg)";
}
function rollOff(oSubmit) {
    oSubmit.style.backgroundImage = "url(../App_Themes/Default/NewImages/login_a.jpg)";
}
function rollIn(oSubmit) {
    oSubmit.style.backgroundImage = "url(../App_Themes/Default/NewImages/register_b.jpg)";
}
function rollOut(oSubmit) {
    oSubmit.style.backgroundImage = "url(../App_Themes/Default/NewImages/register_a.jpg)";
}
function swapIn(oSubmit) {
    oSubmit.style.backgroundImage = "url(../App_Themes/Default/NewImages/search_b.jpg)";
}
function swapOff(oSubmit) {
    oSubmit.style.backgroundImage = "url(../App_Themes/Default/NewImages/search_a.jpg)";
}

function swap1(oSubmit)
{
    oSubmit.style.backgroundImage = "url(../App_Themes/Default/NewImages/submit_b.jpg)";
}

function swap2(oSubmit)
{
    oSubmit.style.backgroundImage = "url(../App_Themes/Default/NewImages/submit_a.jpg)";
}