function CheckField(itemtocheck,src,rexp,example){
	if (src != ""){
		re = new RegExp(rexp) 
		if (re.test(src)){
			error = 0;
			}
		else {
			error = 1;
    		alert(itemtocheck + " field is incorrect! example: " + example);
			}
		}
	else {
		error = 1;
		alert("Please fill in the " + itemtocheck);
	}
}

function CheckDrop(itemtocheck,src){
	if (src == "0"){
		error = 1;
		alert("Please select a " + itemtocheck);
		}
	else {
	error = 0;
	}
}