function getradioSelection(group){
	for(var k=0;k<group.length;k++){
		if(group[k].checked) {
			return true;
		}
	}
	return false;
}

function isInteger(f) {
	var i;
    for(i = 0; i < f.length; i++){   
        var c = f.charAt(i);
        if(((c < "0") || (c > "9"))) return false;
    }
    return true;
}


function checkForm() {	
	if(!getradioSelection(document.workshopFrm.session)){
		alert("Please select a workshop session!");
		document.workshopFrm.session[0].focus();
		return false;
	}else if(document.workshopFrm.FirstName.value == ""){
		alert("Please enter your First Name!");
		document.workshopFrm.FirstName.focus();
		return false;
	}else if(document.workshopFrm.LastName.value == ""){
		alert("Please enter your Last Name!");
		document.workshopFrm.LastName.focus();
		return false;
	}else if(document.workshopFrm.area.value == ""){
		alert("Please enter your phone number!");
		document.workshopFrm.area.focus();
		return false;
	}else if(document.workshopFrm.pre.value == ""){
		alert("Please enter your phone number!");
		document.workshopFrm.pre.focus();
		return false;
	}else if(document.workshopFrm.num.value == ""){
		alert("Please enter your phone number!");
		document.workshopFrm.num.focus();
		return false;
	}else if(!isInteger(document.workshopFrm.area.value)){
		alert("Invalid phone number, numbers only!");
		document.workshopFrm.area.focus();
		return false;
	}else if(!isInteger(document.workshopFrm.pre.value)){
		alert("Invalid phone number, numbers only!");
		document.workshopFrm.pre.focus();
		return false;
	}else if(!isInteger(document.workshopFrm.num.value)){
		alert("Invalid phone number, numbers only!");
		document.workshopFrm.num.focus();
		return false;
	}else if(document.workshopFrm.Email.value == ""){
		alert("Please enter your email address!");
		document.workshopFrm.Email.focus();
		return false;
	}else{
		return true;
	}
}