var check_value = 1;
var check_value_ = 1;

function field_focus(frm, field, def_value){
	if(document.forms[frm].elements[field].value==def_value){
		document.forms[frm].elements[field].value = ''
	}
}

function field_blur(frm, field, def_value){
	if(document.forms[frm].elements[field].value==''){
		document.forms[frm].elements[field].value = def_value
	}
}

function clear_field(frm, field, def_value){
	for(i=0; i<field.length; i++){
		document.forms[frm].elements[field[i]].value = def_value[i]
	}
}


function cnange_checkbox(frm, field, img, img_type, type){
	switch(document.forms[frm].elements[field].value){
		case '0' :
			document.forms[frm].elements[field].value='1'
			for(i=0; i<img.length; i++){
				if (document.images[img[i]]) document.images[img[i]].src='./img/check-'+img_type[i]+'-ok.gif'
			}
		break
		case '1' :
			document.forms[frm].elements[field].value='0'
			for(i=0; i<img.length; i++){
				if (document.images[img[i]]) document.images[img[i]].src='./img/check-'+img_type[i]+'.gif'
			}
		break
	}
} 

function change_check(img){
	if(check_value==1){
		document.images[img].src="./img/check-.gif";
		check_value=-1;
	} else {
		if(check_value==-1){
			document.images[img].src="./img/check-ok.gif";
			check_value=1;
	   }
	}
}

function change_check_(img){
	if(check_value==1){
		document.images[img].src="./img/check-.gif";
		check_value=-1;
	} else {
		if(check_value==-1){
			document.images[img].src="./img/check-ok.gif";
			check_value=1;
		}
   }
}

function change_lng_check(img){
	if(img=='rcheck'){
		document.images["rcheck"].src="./img/check--ok.gif";
		document.images["echeck"].src="./img/check--.gif";
	} else {
		document.images["rcheck"].src="./img/check--.gif";
		document.images["echeck"].src="./img/check--ok.gif";
	}
}