var check = false;
var oldstyle = "";
var oldstyle2 = "";
var oldstyle3 = "";

function changeFontSize(size) {
	var bodyEle = document.getElementsByTagName("body")[0];		
	if (bodyEle) {
		bodyEle.style.fontSize = size+"px";
	}
	storeFont(size);
}

function storeFont(fontSize) {
 	createCookie("user.FontSize", fontSize);
}

function storeContrast(param){
	createCookie("user.Contrast", param);
}

function createCookie(name,value,days) {
    	if (days) {
        	var date = new Date();
        	date.setTime(date.getTime()+(days*24*60*60*1000));
       		var expires = "; expires="+date.toGMTString();
    	} else {
      		var expires = "";
				
    	}
    	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
   	var nameEQ = name + "=";
    	var ca = document.cookie.split(";");
    	for(var i=0; i < ca.length;i++) {
        	var c = ca[i];
        	while (c.charAt(0)== " ") c = c.substring(1,c.length);
        		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
    	}
    	return null;
}

function initreadCookie() {
	fontSize = readCookie("user.FontSize");
	if (fontSize) {
    		changeFontSize(fontSize);			
	}
	
	contrast = readCookie("user.Contrast");
	if (contrast) {
		if (contrast.indexOf("true") != -1) {
			getContrastLayout();
		}
	}
	
}


function getContrastLayout() {

  var pic = document.getElementById("logoImage");
  var dom = document.domain;
	
  if (check == false) {
	if (pic != null) {
  		pic.src = 'http://'+dom+'/common/wels/stadt_wels_contrast.jpg';
	}

	var iter = document.getElementsByTagName("link");
	var zeichenkette = "";
	for (i = 0;i < iter.length; i++){
		if (iter[i].href.indexOf("/css/wels/style_jugend.css") != -1) {
			oldstyle3 = iter[i].href;
			iter[i].href = "/css/wels/style_contrast_jugend.css";
			check = true;
			i = i + 2;
		}
		else if (iter[i].href.indexOf("/css/wels/style_front.css") != -1) {
			oldstyle2 = iter[i].href;
			iter[i].href = "/css/wels/style_contrast_front.css";
			check = true;
			i = i + 2;

		} else {
			if (i == 2) {
				oldstyle = iter[i].href;
				iter[i].href = "/css/wels/style_contrast_basic.css";
				check = true;
			}
		}	
	} 

	storeContrast("true");

  } else {
	if (pic != null) {
		pic.src = 'http://'+dom+'/common/wels/logo_stadtwels_transparent.gif';
	}

	var iter = document.getElementsByTagName("link");
	for (i = 0;i < iter.length; i++){
				
		if (iter[i].href.indexOf("/css/wels/style_contrast_jugend.css") != -1) {
			iter[i].href = oldstyle3;
			check = false;
			i = i + 2;
		}
		else if (iter[i].href.indexOf("/css/wels/style_contrast_front.css") != -1) {
			iter[i].href = oldstyle2;
			check = false;
			i = i + 2;

		} else {
			if (i == 2) {
				iter[i].href = oldstyle;
				check = false;
			}
		}

	} 

	storeContrast("false");	

  }	


}