var ua = navigator.userAgent.toLowerCase();
var browser = (ua.indexOf("msie") != -1 && ua.indexOf("opera") == -1 && ua.indexOf("webtv") == -1)?0:1;
var imgs = new Array();

function isEmpty(fld_name) {
	str = trim(fld_name);
	if(str == '') {
		return true;
	} else {
		return false;
	}
}

function imgPreload(){
    
    var imgArr =  new Array('images/news_bg_blue.png', 
							'images/news_bg_white.png',
							'images/partners/pharmaco.png',
							'images/partners/pharmaco_over.png',
							'images/partners/aub.png',
							'images/partners/aub_over.png',
							'images/partners/sky_mob.png',
							'images/partners/sky_mob_over.png');
	for(i=0; i<imgArr.length;i++) {
		if(browser == 1) {
			var tmpImg=new Image(); 
			tmpImg.src = imgArr[i];
			imgs['bck_'+i] = tmpImg;
		} else if(browser == 0) {
			var tmpImg = document.createElement('img');
			tmpImg.src = imgArr[i];
			imgs['bck_'+i] = tmpImg;
		}
	}
	
}


function positioningSearchForm(){
    document.getElementById('div-search-form').style.left = parseInt(document.getElementById('mt').offsetLeft+document.getElementById('mt').offsetWidth-document.getElementById('div-search-form').offsetWidth)+'px';
}

function trimStringSpaces(obj)
{
   var str = trim(document.getElementById(obj).value);
   if(str != "") {
       reg_exp = /(\s+)/gi;
       str = str.replace(reg_exp, ' ');
   }
   
   document.getElementById(obj).value = str;
}

function isValidSize(obj) {
    isValid = true;
    if(trim(document.getElementById(obj).value) == "" || isNaN(trim(document.getElementById(obj).value)) || parseInt(trim(document.getElementById(obj).value)) > 100 || parseInt(trim(document.getElementById(obj).value)) < 0) {
        alert('Введенное значение должно быть от 0 до 100');
        document.getElementById(obj).select();
        isValid = false;
    }
    return isValid;
}

function trim(str) {
	reb = /^(\s+)/;
	ree = /(\s+)$/;
	str = str.replace(reb, '');
	str = str.replace(ree, '');
	return str;
 }
 
 function hideS(){
    id = this.id.substring(4); 
    document.getElementById('brd_'+id).style.display = 'none'; 
    document.getElementById('res_'+id).innerHTML = '';
 }

 function redeclareTextareas(){
     var texts = document.getElementsByTagName('textarea');
     for(var i=0;i<texts.length;i++)
        if(texts[i].id) {
            if(texts[i].id.indexOf('cnt_') > -1){
                texts[i].onkeydown = hideS;
                texts[i].onchange = hideS;
            } 
        }
 }