// teste auf Frames

function frametest()
{
	if(top.frames.length > 0)
	top.location.href=self.location;
}

/* Zeichne die Inputboxen */
function do_draw_input_boxes(obj, pre) {
	
	if(pre == null) {
		pre = '';
	}
	
	/* Pruefe auf gueltigen Wert */
	if(obj.value >= 0 && obj.value < 5) {
		
		/* Bearbeite die Elemente, die angezeigt werden sollen */
		for(var i=1;i<=obj.value;++i) {
			
			var row_1_id = pre + 'row_1_' + i;
			var row_1_element = document.getElementById(row_1_id);
			
			var row_2_id = pre + 'row_2_' + i;
			var row_2_element = document.getElementById(row_2_id);
			
			var row_3_id = pre + 'row_3_' + i;
			var row_3_element = document.getElementById(row_3_id);
			
			var row_4_id = pre + 'row_4_' + i;
			var row_4_element = document.getElementById(row_4_id);
			
			var row_5_id = pre + 'row_5_' + i;
			var row_5_element = document.getElementById(row_5_id);
			
			var row_6_id = pre + 'row_6_' + i;
			var row_6_element = document.getElementById(row_6_id);
			
			var row_7_id = pre + 'row_7_' + i;
			var row_7_element = document.getElementById(row_7_id);
			
			var row_8_id = pre + 'row_8_' + i;
			var row_8_element = document.getElementById(row_8_id);
			
			var row_9_id = pre + 'row_9_' + i;
			var row_9_element = document.getElementById(row_9_id);
			
			var row_10_id = pre + 'row_10_' + i;
			var row_10_element = document.getElementById(row_10_id);
			
			showElement(row_1_element);
			showElement(row_2_element);
			showElement(row_3_element);
			showElement(row_4_element);
			showElement(row_5_element);
			showElement(row_6_element);
			showElement(row_7_element);
			showElement(row_8_element);
			showElement(row_9_element);
			showElement(row_10_element);
		}
		
		/* Bearbeite die Elemente, die nicht angezeigt werden sollen */
		for(var j=(obj.value*1)+1;j<=4;++j) {
			
			row_1_id = pre + 'row_1_' + j;
			row_1_element = document.getElementById(row_1_id);
			
			row_2_id = pre + 'row_2_' + j;
			row_2_element = document.getElementById(row_2_id);
			
			row_3_id = pre + 'row_3_' + j;
			row_3_element = document.getElementById(row_3_id);
			
			row_4_id = pre + 'row_4_' + j;
			row_4_element = document.getElementById(row_4_id);
			
			row_5_id = pre + 'row_5_' + j;
			row_5_element = document.getElementById(row_5_id);
			
			row_6_id = pre + 'row_6_' + j;
			row_6_element = document.getElementById(row_6_id);
			
			row_7_id = pre + 'row_7_' + j;
			row_7_element = document.getElementById(row_7_id);
			
			row_8_id = pre + 'row_8_' + j;
			row_8_element = document.getElementById(row_8_id);
			
			row_9_id = pre + 'row_9_' + j;
			row_9_element = document.getElementById(row_9_id);
			
			row_10_id = pre + 'row_10_' + j;
			row_10_element = document.getElementById(row_10_id);
			
			hideElement(row_1_element);
			hideElement(row_2_element);
			hideElement(row_3_element);
			hideElement(row_4_element);
			hideElement(row_5_element);
			hideElement(row_6_element);
			hideElement(row_7_element);
			hideElement(row_8_element);
			hideElement(row_9_element);
			hideElement(row_0_element);
			
			forename_id = 'forename_' + j;
			document.getElementById(forename_id).value = '';
			
			surname_id = 'surname_' + j;
			document.getElementById(surname_id).value = '';
			
			company_id = 'company_' + j;
			document.getElementById(company_id).value = '';
			
			sector_id = 'sector_' + j;
			document.getElementById(sector_id).value = '';
		}	
	}	
}

/* Zeige die versteckten Elemente wieder an */
function showElement(element) {
	element.style.width = '';
	element.style.height = '';
	element.style.display = '';
}

/* Verstecke Elemente und loesche deren Inhalt */
function hideElement(element) {
	element.style.width = '0px';
	element.style.height = '0px';
	element.style.display = 'none';
}