function getElementsByClassName(oElm, strTagName, oClassNames){
    var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
    var arrReturnElements = new Array();
    var arrRegExpClassNames = new Array();
    if(typeof oClassNames == "object"){
	    for(var i=0; i<oClassNames.length; i++){
		    arrRegExpClassNames.push(new RegExp("(^|\s)" + oClassNames[i].replace(/-/g, "\-") + "(\s|$)"));
	    }
    }
    else{
	    arrRegExpClassNames.push(new RegExp("(^|\s)" + oClassNames.replace(/-/g, "\-") + "(\s|$)"));
    }
    var oElement;
    var bMatchesAll;
    for(var j=0; j<arrElements.length; j++){
	    oElement = arrElements[j];
	    bMatchesAll = true;
	    for(var k=0; k<arrRegExpClassNames.length; k++){
		    if(!arrRegExpClassNames[k].test(oElement.className)){
			    bMatchesAll = false;
			    break;
		    }
	    }
	    if(bMatchesAll){
		    arrReturnElements.push(oElement);
	    }
    }
    return (arrReturnElements)
}
function formcheck() {
    var req = getElementsByClassName(document, "input", "required");
    var msg = "Please populate the following required fields: \n";
    var j=0;
    for (var i=0; i<req.length; i++) {
        if (req[i].value == "") {
            msg += req[i].title;
            msg += "\n";
            j++;
            }
    }
    if (j>0) {
        alert(msg);
        return false; 
    }
}