function dohover() {
	   preload_image_object = new Image();
	   preload_image_object.src = "/img/table/yes2.gif";
  	   if (!document.getElementsByTagName) return false;
      var links = document.getElementsByTagName("td");
      for (var i=0; i < links.length; i++) {
    	 if (links[i].className.match("choice") || links[i].className.match("desc")) {
       links[i].onmouseover = function() {
        this.parentNode.style.fontWeight='bold';
        this.parentNode.style.filter="alpha(opacity:70)";
        this.parentNode.style.KHTMLOpacity="0.70";
        this.parentNode.style.MozOpacity="0.70";
        this.parentNode.style.opacity="0.70";
        var imgs = document.getElementsByTagName("img");
        var parentObject = this.parentNode;
        for (var i=0; i < imgs.length; i++) {
         if (imgs[i].src.match("img/table/yes.gif") && imgs[i].parentNode.parentNode == parentObject) {
          imgs[i].src="/img/table/yes2.gif";
         }
        }
        return false;
        }
       links[i].onmouseout = function() {
        this.parentNode.style.fontWeight='normal';
        this.parentNode.style.filter="alpha(opacity:100)";
        this.parentNode.style.KHTMLOpacity="1";
        this.parentNode.style.MozOpacity="1";
        this.parentNode.style.opacity="1";
        var imgs = document.getElementsByTagName("img");
        var parentObject = this.parentNode;
        for (var i=0; i < imgs.length; i++) {
         if (imgs[i].src.match("/img/table/yes2.gif") && imgs[i].parentNode.parentNode == parentObject) {
          imgs[i].src="/img/table/yes.gif";
         }
        }
        return false;
        }
       }
      }
     }
     //window.onload = dohover;
     
     
      function izmaksas() {
       var tarifs = document.getElementById('tarifs').value;
       var apmaksa = document.getElementById('apmaksa').value;
       var prices = Array();
       prices['ekon'] = 5.90;
       prices['akti'] = 11.80;
       prices['bizn'] = 17.70;
       prices['stud'] = 23.60 / 12;   
       prices['maza'] = 11.80 / 12;      
       var atlaide = 0; var meen = 1;
       if (apmaksa == "1") { atlaide = 0; meen = 1; }
       if (apmaksa == "2") { atlaide = 10; meen = 3; }
       if (apmaksa == "3") { atlaide = 15; meen = 6; }
       if (apmaksa == "4") { atlaide = 20; meen = 12; }
       
       if (atlaide > 0 && prices[tarifs] > 2) {
          var sum1 = prices[tarifs] - (prices[tarifs] * atlaide / 100);
          var sum2 = sum1 * meen;
          var sum3 = (prices[tarifs] - sum1) * meen;
          }
       else { 
          var sum1 = prices[tarifs];
          var sum2 = prices[tarifs] * meen;
          var sum3 = 0.00;
          }
       if (sum3 > 0) sum3 = '<a style="color: red;">'+sum3.toFixed(2)+'</a>';
       else sum3 = sum3.toFixed(2);
    
       var text = "<span>Mēnesī: <a>"+sum1.toFixed(2)+" Ls</a></span><span>Сумма: <a>"+sum2.toFixed(2)+" Ls</a></span><span>Ietaupīts: <a>"+sum3+" Ls</a></span>";
       document.getElementById('izmaksas').innerHTML = text;
    }
    
    window.onload = function() {
       dohover();
       if (document.getElementById('tarifs')) izmaksas();
    }
   
    function switchvis(id,id2) { 
     if(document.getElementById(id)){    
       var ele = document.getElementById(id); 
       var ele2 = document.getElementById(id2); 
       if(ele.className=="hide"){    
           ele.className="show"; 
           ele2.className="hide"; 
       }
     } 
    } 
    
	 function validate_form () {
	  if (!document.getElementsByTagName) return true;
	  
	  var reqfields = Array();
	  var ri = 0;
	  
     var labels=document.getElementsByTagName("label");
     var inputs=document.getElementsByTagName("input");
     
     for (var i=0; i < inputs.length; i++) {
      for (var i2=0; i2 < labels.length; i2++) {
       if (labels[i2].htmlFor == inputs[i].id && labels[i2].className == "req" && labels[i2].parentNode.className !== "hide") {
         if (inputs[i].value == "") {
         	inputs[i].style.borderColor='red';
         	reqfields[ri] = labels[i2].innerHTML;
         	ri++;
         } else inputs[i].style.borderColor = '#AEDC61';
       }
      }
     }
     if (reqfields.length > 0) {
     	error = "Пожалуйсто заполните эти поля:\n";
     	for (var i=0; i < reqfields.length; i++) {
     		error = error + " - " + reqfields[i].replace(":","") +"\n";
     	}
     	alert(error);
     } else {
      return true;
     }
     return false;
	 }
	 
	 function updateApmaksa(val) {
	  if (val=="stud" || val=="maza") {
	   document.getElementById('apmaksa1').disabled="disabled;"
	   document.getElementById('apmaksa2').disabled="disabled;"
	   document.getElementById('apmaksa3').disabled="disabled;"
	   document.getElementById('apmaksa4').selected="true;"
	  } else {
	   document.getElementById('apmaksa1').removeAttribute('disabled');
	   document.getElementById('apmaksa2').removeAttribute('disabled');
	   document.getElementById('apmaksa3').removeAttribute('disabled');
	  }	  
	 }