how to hide panel on button click in javascript?

call a function on button client click event


onClientClick="HidePanle()"


and on the function


function HidePanle {
document.getelementbyiD('PanleID').style.display= 'none';
}

document.getelementbyiD("ctl00_ContentPlaceHolder1_PanleID").style.display= 'none';