function getMultiElement(elementId) {
    if (document.layers) {
        // Opera
        return document.layers[elementId];
    } else if (document.all) {
        //Internet Explorer
        return document.all[elementId];
    } else if (document.getElementById) {
        //Firefix, Safari, Netscape
        return document.getElementById(elementId);
    }
}

function numbersonly(e) {
    var unicode = e.charCode ? e.charCode : e.keyCode;

    if (unicode == 8 || unicode == 9 || (unicode >= 48 && unicode <= 57)) { //if not a number
        return true;
    }
    return false;
}

	function nbNumbersOnly(e){
		var unicode=e.charCode? e.charCode : e.keyCode
	    if (unicode != 8 && unicode != 9 && unicode != 13) { //if the key isn't the backspace key (which we should allow)
	        if (unicode < 48 || unicode > 57) //if not a number
	            return false; //disable key press
	    }
	}
    
    function switchview(obj) {
    var el = document.getElementById(obj);
    if ( el.style.display != 'none' ) {
        el.style.display = 'none';
						}
    else {
        el.style.display = '';
				}
    }