function no_visible(counter) {
	if (!document.getElementById("txt"+counter).style.disp_i) {
		document.getElementById("txt"+counter).style.display="";
		document.getElementById("minus"+counter).style.display="";
		document.getElementById("plus"+counter).style.display="none";
		document.getElementById("txt"+counter).style.disp_i=true;
	} else {
		document.getElementById("txt"+counter).style.display="none";
		document.getElementById("minus"+counter).style.display="none";
		document.getElementById("plus"+counter).style.display="";
		document.getElementById("txt"+counter).style.disp_i=false;
	}
}
function display() {
			for (i=1; i<11; i++) {
				document.getElementById("txt"+i).style.display="none";
				//document.getElementById("txt"+i).style.display="none";
				
				document.getElementById("minus"+i).style.display="none";
				document.getElementById("plus"+i).style.display="";
			}
		}
function display_on() {
			for (i=1; i<11; i++) {
				document.getElementById("txt"+i).style.display="";
				document.getElementById("minus"+i).style.display="";
				document.getElementById("plus"+i).style.display="none";
			}
		}
function send_mail() {
			if ((inp1_1.value!= "")&(inp1_2.value!= "")&(inp1_3.value!= "")&(inp2_1.value!= "")&(inp2_2.value!= "")&(inp2_3.value!= "")&(inp3.value!= "")&(inp4.value!= "")&(inp5.value!= "")&(inp6.value!= "")&(inp7.value!= "")&(inp8.value!= "")&(inp9.value!= "")&(inp10.value!= "")&(inp11.value!= "")&(inp12.value!= "")&(inp13.value!= "")&(inp14.value!= "")&(inp15.value!= "")&(inp16.value!= "")&(inp17.value!= "")&(inp18.value!= "")&(inp19.value!= "")&(inp20.value!= "")&(inp21.value!= "")&(inp22.value!= "")&(inp23.value!= "")&(inp24.value!= "")&(inp25.value!= "")) {
				alert("Ваша анкета отправлена.");
				} else {
					alert("Заполните, пожалуйста, все поля.");
					}
		}