function changeCity(obj) {
	var alt = document.getElementById('city_alternative');
	if (obj.name == 'city_id') {
		alt.style.display = (obj.value == 0) ? 'block' : 'none';
	}
}


function window_opener_s(w,h,page,pagename){
	if (typeof(pagename) == 'undefined')
	 pagename='openedpage';
	//ah = available screen height, aw = available screen width
	var ah = screen.availHeight
	var aw = screen.availWidth
	//ph - where the window horizontal top will be positioned to
	//pw - where the window left edge will be positioned to
	var ph = ah/2-(h/2)
	var pw = aw/2-(w/2)
	
	return window.open(page,pagename,'width='+w+',height='+h+',status=no,toolbar=no,menubar=no,location=no,scrollbars=yes,resizable=no,left='+pw+',top='+ph);
}

function getStyleForDispaly(){
	myUserAgent = navigator.userAgent.toLowerCase();
	
	if(myUserAgent.indexOf("msie") > 0){
		return style_for_dispaly = "block";
	}else{
		return style_for_dispaly = "table-row";
	}
}

function addComanySelect(){
	var comany_select = document.forms.user_form['add_data_CompanyId'];	
	var comany_name = document.forms.user_form['add_data_CompanyName'];
	
	if (comany_select.value != 0 || (comany_select.value == '')){
		comany_name.parentNode.parentNode.style.display = 'none';	
	}
	
    comany_select.onchange = function(){
    	if ((this.value != 0) || (this.value == '')){
			comany_name.parentNode.parentNode.style.display = 'none';
    	}else{
    		comany_name.parentNode.parentNode.style.display = getStyleForDispaly();
    	}
    }
}    



function addSityChange(){
	var city = document.forms.user_form['City'];	
	var preferable_city = document.forms.user_form['add_data_PreferableCity'];
    city.onchange = function(){
    	if (!preferable_city.value){
			preferable_city.value = this.value;
    	}
    }
} 

function onDrugEneter(e){
		var keynum;
		if(window.event){
		keynum = e.keyCode
		}
		else if(e.which){
			keynum = e.which
		}
		if (keynum == 13){
			addDrugRow();
			return false;
		}else{
			return true;
		};
	}

	function onSpecialtyEneter(e){
		var keynum;
		if(window.event){
		keynum = e.keyCode
		}
		else if(e.which){
			keynum = e.which
		}
		if (keynum == 13){
			addSpecialtyRow();
			return false;
		}else{
			return true;
		};
	}

	function addDrugRow(){
		if (!drug_input.value){
			 alert('Please insert a drug name!');
			 return;
		}
		
		drug_number++;
		drug_table.insertRow(0);
		tr = drug_table.rows[0];		
		
		td0 = document.createElement('th');
		tr.appendChild(td0);		
	 	
	 	td1 = document.createElement('td');
		tr.appendChild(td1);		
	 	
	 	td0.innerHTML = '<span>'+drug_input.value+'</span><input type="hidden" name="drug_'+drug_number+'" value="'+drug_input.value+'"/>';;
	 	td1.innerHTML  = '<a class="link-delete" title="Delete" onclick="delteRow(this);">Delete</a>';
	}
	
	function addFileRow(){
		file_number++;
		file_table.insertRow(0);
		tr = file_table.rows[0];		
		
		td0 = document.createElement('th');
		tr.appendChild(td0);		
	 	
	 	td1 = document.createElement('td');
		tr.appendChild(td1);		
	 	
	 	td0.innerHTML = '<input type="file" name="file_'+file_number+'"/>';
	 	td1.innerHTML  = '<a class="link-delete" title="Remove" onclick="delteRow(this);">remove</a>';
	}
	
	function addSpecialtyRow(){
		if (!specialty_select.value){
			 alert('Please select specialty!');
			 return;
		}
		specialty_number++;		
		specialty_table.insertRow(0);
		tr = specialty_table.rows[0];		
		
		td0 = document.createElement('th');
		tr.appendChild(td0);		
	 	
	 	td1 = document.createElement('td');
		tr.appendChild(td1);		
	 	
	 	td0.innerHTML = '<span>'+specialty_select.options[specialty_select.selectedIndex].text+'</span><input type="hidden" name="specialty_'+specialty_number+'" value="'+specialty_select.value+'"/>';
	 	td1.innerHTML  = '<a class="link-delete" title="Delete"  onclick="delteRow(this);">Delete</a>';
	}	
	
	function delteRow(node){
		if (confirm('Are you sure?')){
			td = node.parentNode;
			tr = td.parentNode;
			table = tr.parentNode;
			table.removeChild(tr);
		}
		return false;		
	}