//-------------------Check Form--------------//
function checkForm(form)
{
	for(var i = 0; i < form.elements.length; i ++)
	{
		var element = form.elements[i];
		
		var check = 0;
		
		if((element.type == "text") || (element.type == "textarea") || (element.type == "radio"))
		{
			check = checkField(element,i, form);
			
			if(check)
				return false;
		}
	}
	
	return true;	
}

function checkField(el,index,form)
{
	var checked=0, id=el.id;
	if (el.type=="radio" && el.title!='') {
		var next_el = el;
		while (next_el.id == el.id){	
			if (next_el.checked) checked = 1;
			index=index+1;
			next_el = form.elements[index];
		}
		if (checked == 0) {
			alert("Не заполнено поле <" + el.title + ">");
			return true;
		}
	}
	if((el.value.length < 1 && el.type !="radio") && el.title!='')
		{
			alert("Не заполнено поле <" + el.title + ">");
			el.focus();
			
			return true;
		}
    return false;
}

function isMail(stringOrElement)
{
	var elem, str;
	stringOrElement.tagName ? elem = stringOrElement : str = stringOrElement;
	
	if(elem && !elem.value.length)
		return;
	
	if(elem)
		str = elem.value;
	
	var re = /^[\w-]+(\.[\w-]+)*@([\w-]+\.)+[a-zA-Z]{2,7}$/;
	
	if(str.match(re))
	{
		if(elem)
		{}
		else
			return true;
	}
	else
	{
		if(elem)
		{
			alert("Не корректный E-mail");
			elem.focus();
			elem.select();
		}
		else
		{			
			return false;
		}
	}
}

//------------------------------------------//