//FUNCTION:  Do not allow letters to be pressed
function filterNonFloat() 
{
	if ( (window.event.keyCode<48 || window.event.keyCode >57) && 
		window.event.keyCode!=13 && window.event.keyCode!=46 ) {
	//alert("Please use only digits")
	window.event.keyCode = 0;
    } 
}

function filterNonInteger()
{
	if ( (window.event.keyCode<48 || window.event.keyCode >57) && window.event.keyCode!=13 ) {
		//alert("Please use only digits")
		window.event.keyCode = 0;
	}
}

//FUNCTION:  Do not allow spaces to be pressed
function filterSpace() 
{
    if (window.event.keyCode==32 || window.event.keyCode==160) {
	//alert("Please use only digits")
	window.event.keyCode = 0;
    } 
}