function trimAll(sString) {
	while (sString.substring(0,1) == ' ') {
		sString = sString.substring(1, sString.length);
	}
	while (sString.substring(sString.length-1, sString.length) == ' ') {
		sString = sString.substring(0,sString.length-1);
	}
	return sString;
}

function ValidateMSDS() {
	var lookupmsdssku = trimAll(document.getElementById("lookupmsdssku").value)
	if(lookupmsdssku == "" || lookupmsdssku.length < 4)
		{
			alert("Please enter a valid sku");
			document.getElementById("lookupmsdssku").focus();
			return false;
		}
}