// JavaScript Document
<!--
function setColorBack() {
        var whiteColor = "#FFFFFF";
	document.addSize.tireSize.style.backgroundColor = whiteColor;
        document.addSize.tireSize.value= "";
}

function setColor(formName, bgColor) {
	if (formName.style) formName.style.backgroundColor = bgColor;
}

function doCheck() {
   	var errorMSG = "Atencion: \n";
        // Tire size patterns that needs to be followed
	var pattern = /(^[\d]{3}){1}(\/\d{2}){1}([a-zA-Z])(\d{2,})$/;
	var pattern1 = /(^[\d]{2,}){1}([a-zA-Z])(\d{2,})$/;
	var pattern2 = /(^[\d]{2,}){1}(\.)(\d{2,})$/;
	var pattern3 = /(^[\d]{2,}){1}(\x)(\d{1,}){1}(\.)(\d{1,}){1}(\x)(\d{2,})$/;
	var pattern4 = /(^[\d]{2,}){1}(\x)(\d{2,}){1}(\x)(\d{2,})$/;
	var pattern5 = /(^[\d]{2,}){1}(\x)(\d{1,}){1}(\.)(\d{1,})$/;
        var pattern6 = /(^[\d]{2,}){1}(\x)(\d{1,}){1}(\.)(\d{1,}){1}([a-zA-Z])(\d{2,})$/;
	var choice = document.addSize.tireSize.value;
    if (pattern.test(choice) || pattern1.test(choice) || pattern2.test(choice) || pattern3.test(choice) || pattern4.test(choice) || pattern5.test(choice) || pattern6.test(choice))
    {
        return true;
    }
    else
    {
        alert(errorMSG + " Introducir medidas con su respectivo formato.\n Siga estos ejemplos: \n 185/60R14\n 155R13 \n 31x10.5x15 \n 31x10x15 \n 31x10.5");
        setColor(document.addSize.tireSize, "#FFCC66");
        return false;
    }

}

//-->