function px(n){return parseInt(n)+'px';}
function createDiv(divId,father,classname){var a=new Element(arguments[5]?arguments[5]:'div',{id:divId,'class':classname,'style':arguments[3]});if(arguments[4])a.update(arguments[4]);if(father=='body')document.body.appendChild(a);else $(father).appendChild(a);}
function screenInfo(){return[document.viewport.getWidth(),document.viewport.getHeight()];}