function show_hide(id,ths) {	
	$('#fr'+id).toggle();
}

function validate(){
    str="";
    strN="";
    flag=true;
    focos=0;
 
    
    
    if((document.formi.author.value.length==0)){
      flag=false
      str=str+err_arr['author_empty']+"<br>"
      if (focos==0) {document.formi.author.focus();focos=1 }
    } 
    
    if((document.formi.title.value.length==0)){
      flag=false
      str=str+err_arr['title_empty']+"<br>"
      if (focos==0) {document.formi.title.focus();focos=1 }
    } 
     
    
    //alert(flag);
    	
    /*if (!validEmail(document.formi.author_email.value) && (document.formi.author_email.value!="")) {
      str=str + err_arr['email_invalid']+"<br>";
      flag=false;
      if (focos==0) {document.formi.email.focus();focos=1 }
    }*/
    
    

   
    if(flag==true){
			return true;
    } else {
      if (document.layers) {
        document.layers['contactalert'].document.close();
        document.layers['contactalert'].document.write(str);
        document.layers['contactalert'].document.close();       
      } else {
        if (document.all) {
          document.all.contactalert.innerHTML = str;
        } else {
          document.getElementById('contactalert').innerHTML = str;
        }
      }   
      return false;
    }
  }
  
  
  function validEmail(email) {
    invalidChars = " /:,;�?בגדהוזחטיכ�?�?נסעפצקרשת";         
    if (email == "") {// cannot be empty
      return false
    }
    for (i=0; i<invalidChars.length; i++) { // does it contain any invalid characters?
      badChar = invalidChars.charAt(i)
      if (email.indexOf(badChar,0) > -1) {
        return false
      }
    }
    atPos = email.indexOf("@",1)            // there must be one "@" symbol
    if (atPos == -1) {
      return false
    }
    if (email.indexOf("@",atPos+1) != -1) { // and only one "@" symbol
      return false
    }
    periodPos = email.indexOf(".",atPos)
    if (periodPos == -1) {                  // and at least one "." after the "@"
      return false
    }
    if (periodPos+3 > email.length) {       // must be at least 2 characters after the "."
      return false
    }
    return true
  }